Generate EMScript

14 files changed, 2191 insertions, 0 deletions

diff --git a/Examples/EMScript/configuration.ccl b/Examples/EMScript/configuration.ccl
new file mode 100644
index 0000000..0a66ec2
--- /dev/null
+++ b/Examples/EMScript/configuration.ccl
@@ -0,0 +1,6 @@
+# File produced by Kranc
+
+REQUIRES GenericFD
+OPTIONAL LoopControl
+{
+}
diff --git a/Examples/EMScript/interface.ccl b/Examples/EMScript/interface.ccl
new file mode 100644
index 0000000..8537b0d
--- /dev/null
+++ b/Examples/EMScript/interface.ccl
@@ -0,0 +1,78 @@
+# File produced by Kranc
+
+implements: EMScript
+
+inherits:   Grid GenericFD Boundary
+
+
+
+USES INCLUDE: GenericFD.h
+USES INCLUDE: Symmetry.h
+USES INCLUDE: sbp_calc_coeffs.h
+USES INCLUDE: Boundary.h
+USES INCLUDE: loopcontrol.h
+
+CCTK_INT FUNCTION MoLRegisterEvolved(CCTK_INT IN EvolvedIndex, CCTK_INT IN RHSIndex)
+USES FUNCTION MoLRegisterEvolved
+
+SUBROUTINE Diff_coeff(CCTK_POINTER_TO_CONST IN cctkGH, CCTK_INT IN dir, CCTK_INT IN nsize, CCTK_INT OUT ARRAY imin, CCTK_INT OUT ARRAY imax, CCTK_REAL OUT ARRAY q, CCTK_INT IN table_handle)
+USES FUNCTION Diff_coeff
+
+CCTK_INT FUNCTION MultiPatch_GetMap(CCTK_POINTER_TO_CONST IN cctkGH)
+USES FUNCTION MultiPatch_GetMap
+
+CCTK_INT FUNCTION Boundary_SelectGroupForBC(CCTK_POINTER_TO_CONST IN GH, CCTK_INT IN faces, CCTK_INT IN boundary_width, CCTK_INT IN table_handle, CCTK_STRING IN group_name, CCTK_STRING IN bc_name)
+USES FUNCTION Boundary_SelectGroupForBC
+
+CCTK_INT FUNCTION Boundary_SelectVarForBC(CCTK_POINTER_TO_CONST IN GH, CCTK_INT IN faces, CCTK_INT IN boundary_width, CCTK_INT IN table_handle, CCTK_STRING IN var_name, CCTK_STRING IN bc_name)
+USES FUNCTION Boundary_SelectVarForBC
+
+public:
+CCTK_REAL CB_group type=GF timelevels=1 tags='tensortypealias="Scalar" tensorweight=0'
+{
+  CB
+} "CB_group"
+
+public:
+CCTK_REAL CEl_group type=GF timelevels=1 tags='tensortypealias="Scalar" tensorweight=0'
+{
+  CEl
+} "CEl_group"
+
+public:
+CCTK_REAL rho_group type=GF timelevels=1 tags='tensortypealias="Scalar" tensorweight=0'
+{
+  rho
+} "rho_group"
+
+public:
+CCTK_REAL B_group type=GF timelevels=3 tags='tensortypealias="D" tensorweight=0'
+{
+  B1,
+  B2,
+  B3
+} "B_group"
+
+public:
+CCTK_REAL El_group type=GF timelevels=3 tags='tensortypealias="D" tensorweight=0'
+{
+  El1,
+  El2,
+  El3
+} "El_group"
+
+public:
+CCTK_REAL B_grouprhs type=GF timelevels=3 tags='tensortypealias="D" tensorweight=0'
+{
+  B1rhs,
+  B2rhs,
+  B3rhs
+} "B_grouprhs"
+
+public:
+CCTK_REAL El_grouprhs type=GF timelevels=3 tags='tensortypealias="D" tensorweight=0'
+{
+  El1rhs,
+  El2rhs,
+  El3rhs
+} "El_grouprhs"
diff --git a/Examples/EMScript/param.ccl b/Examples/EMScript/param.ccl
new file mode 100644
index 0000000..a83e18c
--- /dev/null
+++ b/Examples/EMScript/param.ccl
@@ -0,0 +1,342 @@
+# File produced by Kranc
+
+
+shares: GenericFD
+
+
+
+shares: MethodOfLines
+
+USES CCTK_INT MoL_Num_Evolved_Vars
+USES CCTK_INT MoL_Num_ArrayEvolved_Vars
+
+restricted:
+CCTK_INT verbose "verbose" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT fdOrder "fdOrder"
+{
+  *:* :: ""
+} 2
+
+restricted:
+CCTK_INT EMScript_MaxNumEvolvedVars "Number of evolved variables used by this thorn" ACCUMULATOR-BASE=MethodofLines::MoL_Num_Evolved_Vars STEERABLE=RECOVER
+{
+  6:6 :: "Number of evolved variables used by this thorn"
+} 6
+
+restricted:
+CCTK_INT EMScript_MaxNumArrayEvolvedVars "Number of Array evolved variables used by this thorn" ACCUMULATOR-BASE=MethodofLines::MoL_Num_ArrayEvolved_Vars STEERABLE=RECOVER
+{
+  0:0 :: "Number of Array evolved variables used by this thorn"
+} 0
+
+restricted:
+CCTK_INT timelevels "Number of active timelevels" STEERABLE=RECOVER
+{
+  0:3 :: ""
+} 3
+
+restricted:
+CCTK_INT rhs_timelevels "Number of active RHS timelevels" STEERABLE=RECOVER
+{
+  0:3 :: ""
+} 1
+
+restricted:
+CCTK_INT other_timelevels "Number of active timelevels for non-evolved grid functions" STEERABLE=RECOVER
+{
+  0:3 :: ""
+} 1
+
+restricted:
+CCTK_INT EM_initial_calc_every "EM_initial_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT EM_evol_calc_every "EM_evol_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT EM_constraints_calc_every "EM_constraints_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT EM_energy_calc_every "EM_energy_calc_every" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT EM_initial_calc_offset "EM_initial_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT EM_evol_calc_offset "EM_evol_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT EM_constraints_calc_offset "EM_constraints_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT EM_energy_calc_offset "EM_energy_calc_offset" STEERABLE=ALWAYS
+{
+  *:* :: ""
+} 0
+
+private:
+KEYWORD B1_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD B2_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD B3_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD El1_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD El2_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD El3_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "skip"
+
+private:
+KEYWORD B_group_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "none"
+
+private:
+KEYWORD El_group_bound "Boundary condition to implement" STEERABLE=ALWAYS
+{
+  "flat" :: "Flat boundary condition"
+  "none" :: "No boundary condition"
+  "static" :: "Boundaries held fixed"
+  "radiative" :: "Radiation boundary condition"
+  "scalar" :: "Dirichlet boundary condition"
+  "newrad" :: "Improved radiative boundary condition"
+  "skip" :: "skip boundary condition code"
+} "none"
+
+private:
+CCTK_REAL B1_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL B2_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL B3_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL El1_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL El2_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL El3_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL B_group_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL El_group_bound_speed "characteristic speed at boundary" STEERABLE=ALWAYS
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL B1_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL B2_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL B3_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL El1_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL El2_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL El3_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL B_group_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL El_group_bound_limit "limit value for r -> infinity" STEERABLE=ALWAYS
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL B1_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL B2_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL B3_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL El1_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL El2_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL El3_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL B_group_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL El_group_bound_scalar "Dirichlet boundary value" STEERABLE=ALWAYS
+{
+  "*:*" :: "unrestricted"
+} 0.
+
diff --git a/Examples/EMScript/schedule.ccl b/Examples/EMScript/schedule.ccl
new file mode 100644
index 0000000..db3fb0f
--- /dev/null
+++ b/Examples/EMScript/schedule.ccl
@@ -0,0 +1,126 @@
+# File produced by Kranc
+
+
+if (other_timelevels == 1)
+{
+  STORAGE: CB_group[1]
+}
+
+if (other_timelevels == 1)
+{
+  STORAGE: CEl_group[1]
+}
+
+if (other_timelevels == 1)
+{
+  STORAGE: rho_group[1]
+}
+
+if (timelevels == 1)
+{
+  STORAGE: B_group[1]
+}
+if (timelevels == 2)
+{
+  STORAGE: B_group[2]
+}
+if (timelevels == 3)
+{
+  STORAGE: B_group[3]
+}
+
+if (timelevels == 1)
+{
+  STORAGE: El_group[1]
+}
+if (timelevels == 2)
+{
+  STORAGE: El_group[2]
+}
+if (timelevels == 3)
+{
+  STORAGE: El_group[3]
+}
+
+if (rhs_timelevels == 1)
+{
+  STORAGE: B_grouprhs[1]
+}
+if (rhs_timelevels == 2)
+{
+  STORAGE: B_grouprhs[2]
+}
+if (rhs_timelevels == 3)
+{
+  STORAGE: B_grouprhs[3]
+}
+
+if (rhs_timelevels == 1)
+{
+  STORAGE: El_grouprhs[1]
+}
+if (rhs_timelevels == 2)
+{
+  STORAGE: El_grouprhs[2]
+}
+if (rhs_timelevels == 3)
+{
+  STORAGE: El_grouprhs[3]
+}
+
+schedule EMScript_Startup at STARTUP
+{
+  LANG: C
+  OPTIONS: meta
+} "create banner"
+
+schedule EMScript_RegisterVars in MoL_Register
+{
+  LANG: C
+  OPTIONS: meta
+} "Register Variables for MoL"
+
+schedule EMScript_RegisterSymmetries in SymmetryRegister
+{
+  LANG: C
+  OPTIONS: meta
+} "register symmetries"
+
+schedule EM_initial at initial
+{
+  LANG: C
+} "EM_initial"
+
+schedule EM_evol in MoL_CalcRHS
+{
+  LANG: C
+} "EM_evol"
+
+schedule EM_constraints at analysis
+{
+  LANG: C
+} "EM_constraints"
+
+schedule EM_energy at analysis
+{
+  LANG: C
+} "EM_energy"
+
+schedule EMScript_SelectBoundConds in MoL_PostStep
+{
+  LANG: C
+  OPTIONS: level
+  SYNC: B_group
+  SYNC: El_group
+} "select boundary conditions"
+
+schedule EMScript_CheckBoundaries at BASEGRID
+{
+  LANG: C
+  OPTIONS: meta
+} "check boundaries treatment"
+
+schedule group ApplyBCs as EMScript_ApplyBCs in MoL_PostStep after EMScript_SelectBoundConds
+{
+  # no language specified
+} "Apply boundary conditions controlled by thorn Boundary"
diff --git a/Examples/EMScript/src/Boundaries.cc b/Examples/EMScript/src/Boundaries.cc
new file mode 100644
index 0000000..2d15538
--- /dev/null
+++ b/Examples/EMScript/src/Boundaries.cc
@@ -0,0 +1,457 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "cctk_Faces.h"
+#include "util_Table.h"
+#include "Symmetry.h"
+
+
+/* the boundary treatment is split into 3 steps:    */
+/* 1. excision                                      */
+/* 2. symmetries                                    */
+/* 3. "other" boundary conditions, e.g. radiative */
+
+/* to simplify scheduling and testing, the 3 steps  */
+/* are currently applied in separate functions      */
+
+
+extern "C" void EMScript_CheckBoundaries(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  return;
+}
+
+extern "C" void EMScript_SelectBoundConds(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  
+  if (CCTK_EQUALS(B_group_bound, "none"  ) ||
+      CCTK_EQUALS(B_group_bound, "static") ||
+      CCTK_EQUALS(B_group_bound, "flat"  ) ||
+      CCTK_EQUALS(B_group_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "EMScript::B_group", B_group_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register B_group_bound BC for EMScript::B_group!");
+  }
+  
+  if (CCTK_EQUALS(El_group_bound, "none"  ) ||
+      CCTK_EQUALS(El_group_bound, "static") ||
+      CCTK_EQUALS(El_group_bound, "flat"  ) ||
+      CCTK_EQUALS(El_group_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "EMScript::El_group", El_group_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register El_group_bound BC for EMScript::El_group!");
+  }
+  
+  if (CCTK_EQUALS(B1_bound, "none"  ) ||
+      CCTK_EQUALS(B1_bound, "static") ||
+      CCTK_EQUALS(B1_bound, "flat"  ) ||
+      CCTK_EQUALS(B1_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "EMScript::B1", B1_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register B1_bound BC for EMScript::B1!");
+  }
+  
+  if (CCTK_EQUALS(B2_bound, "none"  ) ||
+      CCTK_EQUALS(B2_bound, "static") ||
+      CCTK_EQUALS(B2_bound, "flat"  ) ||
+      CCTK_EQUALS(B2_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "EMScript::B2", B2_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register B2_bound BC for EMScript::B2!");
+  }
+  
+  if (CCTK_EQUALS(B3_bound, "none"  ) ||
+      CCTK_EQUALS(B3_bound, "static") ||
+      CCTK_EQUALS(B3_bound, "flat"  ) ||
+      CCTK_EQUALS(B3_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "EMScript::B3", B3_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register B3_bound BC for EMScript::B3!");
+  }
+  
+  if (CCTK_EQUALS(El1_bound, "none"  ) ||
+      CCTK_EQUALS(El1_bound, "static") ||
+      CCTK_EQUALS(El1_bound, "flat"  ) ||
+      CCTK_EQUALS(El1_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "EMScript::El1", El1_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register El1_bound BC for EMScript::El1!");
+  }
+  
+  if (CCTK_EQUALS(El2_bound, "none"  ) ||
+      CCTK_EQUALS(El2_bound, "static") ||
+      CCTK_EQUALS(El2_bound, "flat"  ) ||
+      CCTK_EQUALS(El2_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "EMScript::El2", El2_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register El2_bound BC for EMScript::El2!");
+  }
+  
+  if (CCTK_EQUALS(El3_bound, "none"  ) ||
+      CCTK_EQUALS(El3_bound, "static") ||
+      CCTK_EQUALS(El3_bound, "flat"  ) ||
+      CCTK_EQUALS(El3_bound, "zero"  ) )
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1,
+                      "EMScript::El3", El3_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register El3_bound BC for EMScript::El3!");
+  }
+  
+  if (CCTK_EQUALS(B_group_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_B_group_bound = -1;
+    if (handle_B_group_bound < 0) handle_B_group_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_B_group_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_B_group_bound , B_group_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_B_group_bound ,B_group_bound_speed, "SPEED") < 0)
+       CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_B_group_bound, 
+                      "EMScript::B_group", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for EMScript::B_group!");
+  
+  }
+  
+  if (CCTK_EQUALS(El_group_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_El_group_bound = -1;
+    if (handle_El_group_bound < 0) handle_El_group_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_El_group_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_El_group_bound , El_group_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_El_group_bound ,El_group_bound_speed, "SPEED") < 0)
+       CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_El_group_bound, 
+                      "EMScript::El_group", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for EMScript::El_group!");
+  
+  }
+  
+  if (CCTK_EQUALS(B1_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_B1_bound = -1;
+    if (handle_B1_bound < 0) handle_B1_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_B1_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_B1_bound , B1_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_B1_bound ,B1_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_B1_bound, 
+                      "EMScript::B1", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for EMScript::B1!");
+  
+  }
+  
+  if (CCTK_EQUALS(B2_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_B2_bound = -1;
+    if (handle_B2_bound < 0) handle_B2_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_B2_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_B2_bound , B2_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_B2_bound ,B2_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_B2_bound, 
+                      "EMScript::B2", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for EMScript::B2!");
+  
+  }
+  
+  if (CCTK_EQUALS(B3_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_B3_bound = -1;
+    if (handle_B3_bound < 0) handle_B3_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_B3_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_B3_bound , B3_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_B3_bound ,B3_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_B3_bound, 
+                      "EMScript::B3", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for EMScript::B3!");
+  
+  }
+  
+  if (CCTK_EQUALS(El1_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_El1_bound = -1;
+    if (handle_El1_bound < 0) handle_El1_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_El1_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_El1_bound , El1_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_El1_bound ,El1_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_El1_bound, 
+                      "EMScript::El1", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for EMScript::El1!");
+  
+  }
+  
+  if (CCTK_EQUALS(El2_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_El2_bound = -1;
+    if (handle_El2_bound < 0) handle_El2_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_El2_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_El2_bound , El2_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_El2_bound ,El2_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_El2_bound, 
+                      "EMScript::El2", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for EMScript::El2!");
+  
+  }
+  
+  if (CCTK_EQUALS(El3_bound, "radiative"))
+  {
+   /* select radiation boundary condition */
+    static CCTK_INT handle_El3_bound = -1;
+    if (handle_El3_bound < 0) handle_El3_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_El3_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_El3_bound , El3_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_El3_bound ,El3_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_El3_bound, 
+                      "EMScript::El3", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for EMScript::El3!");
+  
+  }
+  
+  if (CCTK_EQUALS(B_group_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_B_group_bound = -1;
+    if (handle_B_group_bound < 0) handle_B_group_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_B_group_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_B_group_bound ,B_group_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_B_group_bound, 
+                      "EMScript::B_group", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Scalar BC for EMScript::B_group!");
+  
+  }
+  
+  if (CCTK_EQUALS(El_group_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_El_group_bound = -1;
+    if (handle_El_group_bound < 0) handle_El_group_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_El_group_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_El_group_bound ,El_group_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_El_group_bound, 
+                      "EMScript::El_group", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Scalar BC for EMScript::El_group!");
+  
+  }
+  
+  if (CCTK_EQUALS(B1_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_B1_bound = -1;
+    if (handle_B1_bound < 0) handle_B1_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_B1_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_B1_bound ,B1_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_B1_bound, 
+                      "EMScript::B1", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for EMScript::B1!");
+  
+  }
+  
+  if (CCTK_EQUALS(B2_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_B2_bound = -1;
+    if (handle_B2_bound < 0) handle_B2_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_B2_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_B2_bound ,B2_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_B2_bound, 
+                      "EMScript::B2", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for EMScript::B2!");
+  
+  }
+  
+  if (CCTK_EQUALS(B3_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_B3_bound = -1;
+    if (handle_B3_bound < 0) handle_B3_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_B3_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_B3_bound ,B3_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_B3_bound, 
+                      "EMScript::B3", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for EMScript::B3!");
+  
+  }
+  
+  if (CCTK_EQUALS(El1_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_El1_bound = -1;
+    if (handle_El1_bound < 0) handle_El1_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_El1_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_El1_bound ,El1_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_El1_bound, 
+                      "EMScript::El1", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for EMScript::El1!");
+  
+  }
+  
+  if (CCTK_EQUALS(El2_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_El2_bound = -1;
+    if (handle_El2_bound < 0) handle_El2_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_El2_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_El2_bound ,El2_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_El2_bound, 
+                      "EMScript::El2", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for EMScript::El2!");
+  
+  }
+  
+  if (CCTK_EQUALS(El3_bound, "scalar"))
+  {
+   /* select scalar boundary condition */
+    static CCTK_INT handle_El3_bound = -1;
+    if (handle_El3_bound < 0) handle_El3_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_El3_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_El3_bound ,El3_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_El3_bound, 
+                      "EMScript::El3", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for EMScript::El3!");
+  
+  }
+  return;
+}
+
+
+
+/* template for entries in parameter file:
+#$bound$#EMScript::B_group_bound       = "skip"
+#$bound$#EMScript::B_group_bound_speed = 1.0
+#$bound$#EMScript::B_group_bound_limit = 0.0
+#$bound$#EMScript::B_group_bound_scalar = 0.0
+
+#$bound$#EMScript::El_group_bound       = "skip"
+#$bound$#EMScript::El_group_bound_speed = 1.0
+#$bound$#EMScript::El_group_bound_limit = 0.0
+#$bound$#EMScript::El_group_bound_scalar = 0.0
+
+#$bound$#EMScript::B1_bound       = "skip"
+#$bound$#EMScript::B1_bound_speed = 1.0
+#$bound$#EMScript::B1_bound_limit = 0.0
+#$bound$#EMScript::B1_bound_scalar = 0.0
+
+#$bound$#EMScript::B2_bound       = "skip"
+#$bound$#EMScript::B2_bound_speed = 1.0
+#$bound$#EMScript::B2_bound_limit = 0.0
+#$bound$#EMScript::B2_bound_scalar = 0.0
+
+#$bound$#EMScript::B3_bound       = "skip"
+#$bound$#EMScript::B3_bound_speed = 1.0
+#$bound$#EMScript::B3_bound_limit = 0.0
+#$bound$#EMScript::B3_bound_scalar = 0.0
+
+#$bound$#EMScript::El1_bound       = "skip"
+#$bound$#EMScript::El1_bound_speed = 1.0
+#$bound$#EMScript::El1_bound_limit = 0.0
+#$bound$#EMScript::El1_bound_scalar = 0.0
+
+#$bound$#EMScript::El2_bound       = "skip"
+#$bound$#EMScript::El2_bound_speed = 1.0
+#$bound$#EMScript::El2_bound_limit = 0.0
+#$bound$#EMScript::El2_bound_scalar = 0.0
+
+#$bound$#EMScript::El3_bound       = "skip"
+#$bound$#EMScript::El3_bound_speed = 1.0
+#$bound$#EMScript::El3_bound_limit = 0.0
+#$bound$#EMScript::El3_bound_scalar = 0.0
+
+*/
+
diff --git a/Examples/EMScript/src/Differencing.h b/Examples/EMScript/src/Differencing.h
new file mode 100644
index 0000000..98de1a1
--- /dev/null
+++ b/Examples/EMScript/src/Differencing.h
@@ -0,0 +1,288 @@
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder21(u) ((-KRANC_GFOFFSET3D(u,-1,0,0) + KRANC_GFOFFSET3D(u,1,0,0))*p1o2dx)
+#else
+#  define PDstandardfdOrder21(u) (PDstandardfdOrder21_impl(u,p1o2dx,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder21_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o2dx, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder21_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o2dx, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-KRANC_GFOFFSET3D(u,-1,0,0) + KRANC_GFOFFSET3D(u,1,0,0))*p1o2dx;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder22(u) ((-KRANC_GFOFFSET3D(u,0,-1,0) + KRANC_GFOFFSET3D(u,0,1,0))*p1o2dy)
+#else
+#  define PDstandardfdOrder22(u) (PDstandardfdOrder22_impl(u,p1o2dy,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder22_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o2dy, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder22_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o2dy, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-KRANC_GFOFFSET3D(u,0,-1,0) + KRANC_GFOFFSET3D(u,0,1,0))*p1o2dy;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder23(u) ((-KRANC_GFOFFSET3D(u,0,0,-1) + KRANC_GFOFFSET3D(u,0,0,1))*p1o2dz)
+#else
+#  define PDstandardfdOrder23(u) (PDstandardfdOrder23_impl(u,p1o2dz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder23_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o2dz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder23_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o2dz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-KRANC_GFOFFSET3D(u,0,0,-1) + KRANC_GFOFFSET3D(u,0,0,1))*p1o2dz;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder41(u) ((-8*KRANC_GFOFFSET3D(u,-1,0,0) + 8*KRANC_GFOFFSET3D(u,1,0,0) + KRANC_GFOFFSET3D(u,-2,0,0) - KRANC_GFOFFSET3D(u,2,0,0))*p1o12dx)
+#else
+#  define PDstandardfdOrder41(u) (PDstandardfdOrder41_impl(u,p1o12dx,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder41_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o12dx, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder41_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o12dx, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-8*KRANC_GFOFFSET3D(u,-1,0,0) + 8*KRANC_GFOFFSET3D(u,1,0,0) + KRANC_GFOFFSET3D(u,-2,0,0) - KRANC_GFOFFSET3D(u,2,0,0))*p1o12dx;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder42(u) ((-8*KRANC_GFOFFSET3D(u,0,-1,0) + 8*KRANC_GFOFFSET3D(u,0,1,0) + KRANC_GFOFFSET3D(u,0,-2,0) - KRANC_GFOFFSET3D(u,0,2,0))*p1o12dy)
+#else
+#  define PDstandardfdOrder42(u) (PDstandardfdOrder42_impl(u,p1o12dy,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder42_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o12dy, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder42_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o12dy, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-8*KRANC_GFOFFSET3D(u,0,-1,0) + 8*KRANC_GFOFFSET3D(u,0,1,0) + KRANC_GFOFFSET3D(u,0,-2,0) - KRANC_GFOFFSET3D(u,0,2,0))*p1o12dy;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder43(u) ((-8*KRANC_GFOFFSET3D(u,0,0,-1) + 8*KRANC_GFOFFSET3D(u,0,0,1) + KRANC_GFOFFSET3D(u,0,0,-2) - KRANC_GFOFFSET3D(u,0,0,2))*p1o12dz)
+#else
+#  define PDstandardfdOrder43(u) (PDstandardfdOrder43_impl(u,p1o12dz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder43_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o12dz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder43_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o12dz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-8*KRANC_GFOFFSET3D(u,0,0,-1) + 8*KRANC_GFOFFSET3D(u,0,0,1) + KRANC_GFOFFSET3D(u,0,0,-2) - KRANC_GFOFFSET3D(u,0,0,2))*p1o12dz;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder211(u) ((-2*KRANC_GFOFFSET3D(u,0,0,0) + KRANC_GFOFFSET3D(u,-1,0,0) + KRANC_GFOFFSET3D(u,1,0,0))*p1odx2)
+#else
+#  define PDstandardfdOrder211(u) (PDstandardfdOrder211_impl(u,p1odx2,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder211_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1odx2, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder211_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1odx2, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-2*KRANC_GFOFFSET3D(u,0,0,0) + KRANC_GFOFFSET3D(u,-1,0,0) + KRANC_GFOFFSET3D(u,1,0,0))*p1odx2;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder222(u) ((-2*KRANC_GFOFFSET3D(u,0,0,0) + KRANC_GFOFFSET3D(u,0,-1,0) + KRANC_GFOFFSET3D(u,0,1,0))*p1ody2)
+#else
+#  define PDstandardfdOrder222(u) (PDstandardfdOrder222_impl(u,p1ody2,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder222_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1ody2, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder222_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1ody2, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-2*KRANC_GFOFFSET3D(u,0,0,0) + KRANC_GFOFFSET3D(u,0,-1,0) + KRANC_GFOFFSET3D(u,0,1,0))*p1ody2;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder233(u) ((-2*KRANC_GFOFFSET3D(u,0,0,0) + KRANC_GFOFFSET3D(u,0,0,-1) + KRANC_GFOFFSET3D(u,0,0,1))*p1odz2)
+#else
+#  define PDstandardfdOrder233(u) (PDstandardfdOrder233_impl(u,p1odz2,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder233_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1odz2, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder233_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1odz2, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-2*KRANC_GFOFFSET3D(u,0,0,0) + KRANC_GFOFFSET3D(u,0,0,-1) + KRANC_GFOFFSET3D(u,0,0,1))*p1odz2;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder411(u) ((30*KRANC_GFOFFSET3D(u,0,0,0) - 16*(KRANC_GFOFFSET3D(u,-1,0,0) + KRANC_GFOFFSET3D(u,1,0,0)) + KRANC_GFOFFSET3D(u,-2,0,0) + KRANC_GFOFFSET3D(u,2,0,0))*pm1o12dx2)
+#else
+#  define PDstandardfdOrder411(u) (PDstandardfdOrder411_impl(u,pm1o12dx2,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder411_impl(CCTK_REAL const* restrict const u, CCTK_REAL const pm1o12dx2, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder411_impl(CCTK_REAL const* restrict const u, CCTK_REAL const pm1o12dx2, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (30*KRANC_GFOFFSET3D(u,0,0,0) - 16*(KRANC_GFOFFSET3D(u,-1,0,0) + KRANC_GFOFFSET3D(u,1,0,0)) + KRANC_GFOFFSET3D(u,-2,0,0) + KRANC_GFOFFSET3D(u,2,0,0))*pm1o12dx2;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder422(u) ((30*KRANC_GFOFFSET3D(u,0,0,0) - 16*(KRANC_GFOFFSET3D(u,0,-1,0) + KRANC_GFOFFSET3D(u,0,1,0)) + KRANC_GFOFFSET3D(u,0,-2,0) + KRANC_GFOFFSET3D(u,0,2,0))*pm1o12dy2)
+#else
+#  define PDstandardfdOrder422(u) (PDstandardfdOrder422_impl(u,pm1o12dy2,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder422_impl(CCTK_REAL const* restrict const u, CCTK_REAL const pm1o12dy2, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder422_impl(CCTK_REAL const* restrict const u, CCTK_REAL const pm1o12dy2, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (30*KRANC_GFOFFSET3D(u,0,0,0) - 16*(KRANC_GFOFFSET3D(u,0,-1,0) + KRANC_GFOFFSET3D(u,0,1,0)) + KRANC_GFOFFSET3D(u,0,-2,0) + KRANC_GFOFFSET3D(u,0,2,0))*pm1o12dy2;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder433(u) ((30*KRANC_GFOFFSET3D(u,0,0,0) - 16*(KRANC_GFOFFSET3D(u,0,0,-1) + KRANC_GFOFFSET3D(u,0,0,1)) + KRANC_GFOFFSET3D(u,0,0,-2) + KRANC_GFOFFSET3D(u,0,0,2))*pm1o12dz2)
+#else
+#  define PDstandardfdOrder433(u) (PDstandardfdOrder433_impl(u,pm1o12dz2,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder433_impl(CCTK_REAL const* restrict const u, CCTK_REAL const pm1o12dz2, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder433_impl(CCTK_REAL const* restrict const u, CCTK_REAL const pm1o12dz2, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (30*KRANC_GFOFFSET3D(u,0,0,0) - 16*(KRANC_GFOFFSET3D(u,0,0,-1) + KRANC_GFOFFSET3D(u,0,0,1)) + KRANC_GFOFFSET3D(u,0,0,-2) + KRANC_GFOFFSET3D(u,0,0,2))*pm1o12dz2;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder212(u) ((KRANC_GFOFFSET3D(u,-1,-1,0) - KRANC_GFOFFSET3D(u,-1,1,0) - KRANC_GFOFFSET3D(u,1,-1,0) + KRANC_GFOFFSET3D(u,1,1,0))*p1o4dxdy)
+#else
+#  define PDstandardfdOrder212(u) (PDstandardfdOrder212_impl(u,p1o4dxdy,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder212_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder212_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (KRANC_GFOFFSET3D(u,-1,-1,0) - KRANC_GFOFFSET3D(u,-1,1,0) - KRANC_GFOFFSET3D(u,1,-1,0) + KRANC_GFOFFSET3D(u,1,1,0))*p1o4dxdy;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder213(u) ((KRANC_GFOFFSET3D(u,-1,0,-1) - KRANC_GFOFFSET3D(u,-1,0,1) - KRANC_GFOFFSET3D(u,1,0,-1) + KRANC_GFOFFSET3D(u,1,0,1))*p1o4dxdz)
+#else
+#  define PDstandardfdOrder213(u) (PDstandardfdOrder213_impl(u,p1o4dxdz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder213_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder213_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (KRANC_GFOFFSET3D(u,-1,0,-1) - KRANC_GFOFFSET3D(u,-1,0,1) - KRANC_GFOFFSET3D(u,1,0,-1) + KRANC_GFOFFSET3D(u,1,0,1))*p1o4dxdz;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder221(u) ((KRANC_GFOFFSET3D(u,-1,-1,0) - KRANC_GFOFFSET3D(u,-1,1,0) - KRANC_GFOFFSET3D(u,1,-1,0) + KRANC_GFOFFSET3D(u,1,1,0))*p1o4dxdy)
+#else
+#  define PDstandardfdOrder221(u) (PDstandardfdOrder221_impl(u,p1o4dxdy,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder221_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder221_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (KRANC_GFOFFSET3D(u,-1,-1,0) - KRANC_GFOFFSET3D(u,-1,1,0) - KRANC_GFOFFSET3D(u,1,-1,0) + KRANC_GFOFFSET3D(u,1,1,0))*p1o4dxdy;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder223(u) ((KRANC_GFOFFSET3D(u,0,-1,-1) - KRANC_GFOFFSET3D(u,0,-1,1) - KRANC_GFOFFSET3D(u,0,1,-1) + KRANC_GFOFFSET3D(u,0,1,1))*p1o4dydz)
+#else
+#  define PDstandardfdOrder223(u) (PDstandardfdOrder223_impl(u,p1o4dydz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder223_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dydz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder223_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dydz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (KRANC_GFOFFSET3D(u,0,-1,-1) - KRANC_GFOFFSET3D(u,0,-1,1) - KRANC_GFOFFSET3D(u,0,1,-1) + KRANC_GFOFFSET3D(u,0,1,1))*p1o4dydz;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder231(u) ((KRANC_GFOFFSET3D(u,-1,0,-1) - KRANC_GFOFFSET3D(u,-1,0,1) - KRANC_GFOFFSET3D(u,1,0,-1) + KRANC_GFOFFSET3D(u,1,0,1))*p1o4dxdz)
+#else
+#  define PDstandardfdOrder231(u) (PDstandardfdOrder231_impl(u,p1o4dxdz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder231_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder231_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (KRANC_GFOFFSET3D(u,-1,0,-1) - KRANC_GFOFFSET3D(u,-1,0,1) - KRANC_GFOFFSET3D(u,1,0,-1) + KRANC_GFOFFSET3D(u,1,0,1))*p1o4dxdz;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder232(u) ((KRANC_GFOFFSET3D(u,0,-1,-1) - KRANC_GFOFFSET3D(u,0,-1,1) - KRANC_GFOFFSET3D(u,0,1,-1) + KRANC_GFOFFSET3D(u,0,1,1))*p1o4dydz)
+#else
+#  define PDstandardfdOrder232(u) (PDstandardfdOrder232_impl(u,p1o4dydz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder232_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dydz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder232_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o4dydz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (KRANC_GFOFFSET3D(u,0,-1,-1) - KRANC_GFOFFSET3D(u,0,-1,1) - KRANC_GFOFFSET3D(u,0,1,-1) + KRANC_GFOFFSET3D(u,0,1,1))*p1o4dydz;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder412(u) ((-64*(KRANC_GFOFFSET3D(u,-1,1,0) + KRANC_GFOFFSET3D(u,1,-1,0)) + 64*(KRANC_GFOFFSET3D(u,-1,-1,0) + KRANC_GFOFFSET3D(u,1,1,0)) + 8*(KRANC_GFOFFSET3D(u,-1,2,0) + KRANC_GFOFFSET3D(u,1,-2,0) + KRANC_GFOFFSET3D(u,-2,1,0) + KRANC_GFOFFSET3D(u,2,-1,0)) - 8*(KRANC_GFOFFSET3D(u,-1,-2,0) + KRANC_GFOFFSET3D(u,1,2,0) + KRANC_GFOFFSET3D(u,-2,-1,0) + KRANC_GFOFFSET3D(u,2,1,0)) + KRANC_GFOFFSET3D(u,-2,-2,0) - KRANC_GFOFFSET3D(u,-2,2,0) - KRANC_GFOFFSET3D(u,2,-2,0) + KRANC_GFOFFSET3D(u,2,2,0))*p1o144dxdy)
+#else
+#  define PDstandardfdOrder412(u) (PDstandardfdOrder412_impl(u,p1o144dxdy,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder412_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder412_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-64*(KRANC_GFOFFSET3D(u,-1,1,0) + KRANC_GFOFFSET3D(u,1,-1,0)) + 64*(KRANC_GFOFFSET3D(u,-1,-1,0) + KRANC_GFOFFSET3D(u,1,1,0)) + 8*(KRANC_GFOFFSET3D(u,-1,2,0) + KRANC_GFOFFSET3D(u,1,-2,0) + KRANC_GFOFFSET3D(u,-2,1,0) + KRANC_GFOFFSET3D(u,2,-1,0)) - 8*(KRANC_GFOFFSET3D(u,-1,-2,0) + KRANC_GFOFFSET3D(u,1,2,0) + KRANC_GFOFFSET3D(u,-2,-1,0) + KRANC_GFOFFSET3D(u,2,1,0)) + KRANC_GFOFFSET3D(u,-2,-2,0) - KRANC_GFOFFSET3D(u,-2,2,0) - KRANC_GFOFFSET3D(u,2,-2,0) + KRANC_GFOFFSET3D(u,2,2,0))*p1o144dxdy;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder413(u) ((-64*(KRANC_GFOFFSET3D(u,-1,0,1) + KRANC_GFOFFSET3D(u,1,0,-1)) + 64*(KRANC_GFOFFSET3D(u,-1,0,-1) + KRANC_GFOFFSET3D(u,1,0,1)) + 8*(KRANC_GFOFFSET3D(u,-1,0,2) + KRANC_GFOFFSET3D(u,1,0,-2) + KRANC_GFOFFSET3D(u,-2,0,1) + KRANC_GFOFFSET3D(u,2,0,-1)) - 8*(KRANC_GFOFFSET3D(u,-1,0,-2) + KRANC_GFOFFSET3D(u,1,0,2) + KRANC_GFOFFSET3D(u,-2,0,-1) + KRANC_GFOFFSET3D(u,2,0,1)) + KRANC_GFOFFSET3D(u,-2,0,-2) - KRANC_GFOFFSET3D(u,-2,0,2) - KRANC_GFOFFSET3D(u,2,0,-2) + KRANC_GFOFFSET3D(u,2,0,2))*p1o144dxdz)
+#else
+#  define PDstandardfdOrder413(u) (PDstandardfdOrder413_impl(u,p1o144dxdz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder413_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder413_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-64*(KRANC_GFOFFSET3D(u,-1,0,1) + KRANC_GFOFFSET3D(u,1,0,-1)) + 64*(KRANC_GFOFFSET3D(u,-1,0,-1) + KRANC_GFOFFSET3D(u,1,0,1)) + 8*(KRANC_GFOFFSET3D(u,-1,0,2) + KRANC_GFOFFSET3D(u,1,0,-2) + KRANC_GFOFFSET3D(u,-2,0,1) + KRANC_GFOFFSET3D(u,2,0,-1)) - 8*(KRANC_GFOFFSET3D(u,-1,0,-2) + KRANC_GFOFFSET3D(u,1,0,2) + KRANC_GFOFFSET3D(u,-2,0,-1) + KRANC_GFOFFSET3D(u,2,0,1)) + KRANC_GFOFFSET3D(u,-2,0,-2) - KRANC_GFOFFSET3D(u,-2,0,2) - KRANC_GFOFFSET3D(u,2,0,-2) + KRANC_GFOFFSET3D(u,2,0,2))*p1o144dxdz;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder421(u) ((-64*(KRANC_GFOFFSET3D(u,-1,1,0) + KRANC_GFOFFSET3D(u,1,-1,0)) + 64*(KRANC_GFOFFSET3D(u,-1,-1,0) + KRANC_GFOFFSET3D(u,1,1,0)) + 8*(KRANC_GFOFFSET3D(u,-1,2,0) + KRANC_GFOFFSET3D(u,1,-2,0) + KRANC_GFOFFSET3D(u,-2,1,0) + KRANC_GFOFFSET3D(u,2,-1,0)) - 8*(KRANC_GFOFFSET3D(u,-1,-2,0) + KRANC_GFOFFSET3D(u,1,2,0) + KRANC_GFOFFSET3D(u,-2,-1,0) + KRANC_GFOFFSET3D(u,2,1,0)) + KRANC_GFOFFSET3D(u,-2,-2,0) - KRANC_GFOFFSET3D(u,-2,2,0) - KRANC_GFOFFSET3D(u,2,-2,0) + KRANC_GFOFFSET3D(u,2,2,0))*p1o144dxdy)
+#else
+#  define PDstandardfdOrder421(u) (PDstandardfdOrder421_impl(u,p1o144dxdy,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder421_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder421_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dxdy, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-64*(KRANC_GFOFFSET3D(u,-1,1,0) + KRANC_GFOFFSET3D(u,1,-1,0)) + 64*(KRANC_GFOFFSET3D(u,-1,-1,0) + KRANC_GFOFFSET3D(u,1,1,0)) + 8*(KRANC_GFOFFSET3D(u,-1,2,0) + KRANC_GFOFFSET3D(u,1,-2,0) + KRANC_GFOFFSET3D(u,-2,1,0) + KRANC_GFOFFSET3D(u,2,-1,0)) - 8*(KRANC_GFOFFSET3D(u,-1,-2,0) + KRANC_GFOFFSET3D(u,1,2,0) + KRANC_GFOFFSET3D(u,-2,-1,0) + KRANC_GFOFFSET3D(u,2,1,0)) + KRANC_GFOFFSET3D(u,-2,-2,0) - KRANC_GFOFFSET3D(u,-2,2,0) - KRANC_GFOFFSET3D(u,2,-2,0) + KRANC_GFOFFSET3D(u,2,2,0))*p1o144dxdy;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder423(u) ((-64*(KRANC_GFOFFSET3D(u,0,-1,1) + KRANC_GFOFFSET3D(u,0,1,-1)) + 64*(KRANC_GFOFFSET3D(u,0,-1,-1) + KRANC_GFOFFSET3D(u,0,1,1)) + 8*(KRANC_GFOFFSET3D(u,0,-1,2) + KRANC_GFOFFSET3D(u,0,1,-2) + KRANC_GFOFFSET3D(u,0,-2,1) + KRANC_GFOFFSET3D(u,0,2,-1)) - 8*(KRANC_GFOFFSET3D(u,0,-1,-2) + KRANC_GFOFFSET3D(u,0,1,2) + KRANC_GFOFFSET3D(u,0,-2,-1) + KRANC_GFOFFSET3D(u,0,2,1)) + KRANC_GFOFFSET3D(u,0,-2,-2) - KRANC_GFOFFSET3D(u,0,-2,2) - KRANC_GFOFFSET3D(u,0,2,-2) + KRANC_GFOFFSET3D(u,0,2,2))*p1o144dydz)
+#else
+#  define PDstandardfdOrder423(u) (PDstandardfdOrder423_impl(u,p1o144dydz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder423_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dydz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder423_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dydz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-64*(KRANC_GFOFFSET3D(u,0,-1,1) + KRANC_GFOFFSET3D(u,0,1,-1)) + 64*(KRANC_GFOFFSET3D(u,0,-1,-1) + KRANC_GFOFFSET3D(u,0,1,1)) + 8*(KRANC_GFOFFSET3D(u,0,-1,2) + KRANC_GFOFFSET3D(u,0,1,-2) + KRANC_GFOFFSET3D(u,0,-2,1) + KRANC_GFOFFSET3D(u,0,2,-1)) - 8*(KRANC_GFOFFSET3D(u,0,-1,-2) + KRANC_GFOFFSET3D(u,0,1,2) + KRANC_GFOFFSET3D(u,0,-2,-1) + KRANC_GFOFFSET3D(u,0,2,1)) + KRANC_GFOFFSET3D(u,0,-2,-2) - KRANC_GFOFFSET3D(u,0,-2,2) - KRANC_GFOFFSET3D(u,0,2,-2) + KRANC_GFOFFSET3D(u,0,2,2))*p1o144dydz;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder431(u) ((-64*(KRANC_GFOFFSET3D(u,-1,0,1) + KRANC_GFOFFSET3D(u,1,0,-1)) + 64*(KRANC_GFOFFSET3D(u,-1,0,-1) + KRANC_GFOFFSET3D(u,1,0,1)) + 8*(KRANC_GFOFFSET3D(u,-1,0,2) + KRANC_GFOFFSET3D(u,1,0,-2) + KRANC_GFOFFSET3D(u,-2,0,1) + KRANC_GFOFFSET3D(u,2,0,-1)) - 8*(KRANC_GFOFFSET3D(u,-1,0,-2) + KRANC_GFOFFSET3D(u,1,0,2) + KRANC_GFOFFSET3D(u,-2,0,-1) + KRANC_GFOFFSET3D(u,2,0,1)) + KRANC_GFOFFSET3D(u,-2,0,-2) - KRANC_GFOFFSET3D(u,-2,0,2) - KRANC_GFOFFSET3D(u,2,0,-2) + KRANC_GFOFFSET3D(u,2,0,2))*p1o144dxdz)
+#else
+#  define PDstandardfdOrder431(u) (PDstandardfdOrder431_impl(u,p1o144dxdz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder431_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder431_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dxdz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-64*(KRANC_GFOFFSET3D(u,-1,0,1) + KRANC_GFOFFSET3D(u,1,0,-1)) + 64*(KRANC_GFOFFSET3D(u,-1,0,-1) + KRANC_GFOFFSET3D(u,1,0,1)) + 8*(KRANC_GFOFFSET3D(u,-1,0,2) + KRANC_GFOFFSET3D(u,1,0,-2) + KRANC_GFOFFSET3D(u,-2,0,1) + KRANC_GFOFFSET3D(u,2,0,-1)) - 8*(KRANC_GFOFFSET3D(u,-1,0,-2) + KRANC_GFOFFSET3D(u,1,0,2) + KRANC_GFOFFSET3D(u,-2,0,-1) + KRANC_GFOFFSET3D(u,2,0,1)) + KRANC_GFOFFSET3D(u,-2,0,-2) - KRANC_GFOFFSET3D(u,-2,0,2) - KRANC_GFOFFSET3D(u,2,0,-2) + KRANC_GFOFFSET3D(u,2,0,2))*p1o144dxdz;
+}
+#endif
+
+#ifndef KRANC_DIFF_FUNCTIONS
+#  define PDstandardfdOrder432(u) ((-64*(KRANC_GFOFFSET3D(u,0,-1,1) + KRANC_GFOFFSET3D(u,0,1,-1)) + 64*(KRANC_GFOFFSET3D(u,0,-1,-1) + KRANC_GFOFFSET3D(u,0,1,1)) + 8*(KRANC_GFOFFSET3D(u,0,-1,2) + KRANC_GFOFFSET3D(u,0,1,-2) + KRANC_GFOFFSET3D(u,0,-2,1) + KRANC_GFOFFSET3D(u,0,2,-1)) - 8*(KRANC_GFOFFSET3D(u,0,-1,-2) + KRANC_GFOFFSET3D(u,0,1,2) + KRANC_GFOFFSET3D(u,0,-2,-1) + KRANC_GFOFFSET3D(u,0,2,1)) + KRANC_GFOFFSET3D(u,0,-2,-2) - KRANC_GFOFFSET3D(u,0,-2,2) - KRANC_GFOFFSET3D(u,0,2,-2) + KRANC_GFOFFSET3D(u,0,2,2))*p1o144dydz)
+#else
+#  define PDstandardfdOrder432(u) (PDstandardfdOrder432_impl(u,p1o144dydz,cdj,cdk))
+static CCTK_REAL PDstandardfdOrder432_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dydz, ptrdiff_t const cdj, ptrdiff_t const cdk) CCTK_ATTRIBUTE_NOINLINE CCTK_ATTRIBUTE_UNUSED;
+static CCTK_REAL PDstandardfdOrder432_impl(CCTK_REAL const* restrict const u, CCTK_REAL const p1o144dydz, ptrdiff_t const cdj, ptrdiff_t const cdk)
+{
+  ptrdiff_t const cdi=sizeof(CCTK_REAL);
+  return (-64*(KRANC_GFOFFSET3D(u,0,-1,1) + KRANC_GFOFFSET3D(u,0,1,-1)) + 64*(KRANC_GFOFFSET3D(u,0,-1,-1) + KRANC_GFOFFSET3D(u,0,1,1)) + 8*(KRANC_GFOFFSET3D(u,0,-1,2) + KRANC_GFOFFSET3D(u,0,1,-2) + KRANC_GFOFFSET3D(u,0,-2,1) + KRANC_GFOFFSET3D(u,0,2,-1)) - 8*(KRANC_GFOFFSET3D(u,0,-1,-2) + KRANC_GFOFFSET3D(u,0,1,2) + KRANC_GFOFFSET3D(u,0,-2,-1) + KRANC_GFOFFSET3D(u,0,2,1)) + KRANC_GFOFFSET3D(u,0,-2,-2) - KRANC_GFOFFSET3D(u,0,-2,2) - KRANC_GFOFFSET3D(u,0,2,-2) + KRANC_GFOFFSET3D(u,0,2,2))*p1o144dydz;
+}
+#endif
+
diff --git a/Examples/EMScript/src/EM_constraints.cc b/Examples/EMScript/src/EM_constraints.cc
new file mode 100644
index 0000000..2387960
--- /dev/null
+++ b/Examples/EMScript/src/EM_constraints.cc
@@ -0,0 +1,199 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+extern "C" void EM_constraints_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "EMScript::CB_group","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for EMScript::CB_group.");
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "EMScript::CEl_group","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for EMScript::CEl_group.");
+  return;
+}
+
+static void EM_constraints_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare finite differencing variables */
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const t = ToReal(cctk_time);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  CCTK_LOOP3 (EM_constraints,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    CCTK_REAL B1L = B1[index];
+    CCTK_REAL B2L = B2[index];
+    CCTK_REAL B3L = B3[index];
+    CCTK_REAL El1L = El1[index];
+    CCTK_REAL El2L = El2[index];
+    CCTK_REAL El3L = El3[index];
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    CCTK_REAL PDstandard1B1;
+    CCTK_REAL PDstandard2B2;
+    CCTK_REAL PDstandard3B3;
+    CCTK_REAL PDstandard1El1;
+    CCTK_REAL PDstandard2El2;
+    CCTK_REAL PDstandard3El3;
+    
+    switch(fdOrder)
+    {
+      case 2:
+        PDstandard1B1 = PDstandardfdOrder21(&B1[index]);
+        PDstandard2B2 = PDstandardfdOrder22(&B2[index]);
+        PDstandard3B3 = PDstandardfdOrder23(&B3[index]);
+        PDstandard1El1 = PDstandardfdOrder21(&El1[index]);
+        PDstandard2El2 = PDstandardfdOrder22(&El2[index]);
+        PDstandard3El3 = PDstandardfdOrder23(&El3[index]);
+        break;
+      
+      case 4:
+        PDstandard1B1 = PDstandardfdOrder41(&B1[index]);
+        PDstandard2B2 = PDstandardfdOrder42(&B2[index]);
+        PDstandard3B3 = PDstandardfdOrder43(&B3[index]);
+        PDstandard1El1 = PDstandardfdOrder41(&El1[index]);
+        PDstandard2El2 = PDstandardfdOrder42(&El2[index]);
+        PDstandard3El3 = PDstandardfdOrder43(&El3[index]);
+        break;
+    }
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL CElL = PDstandard1El1 + PDstandard2El2 + PDstandard3El3;
+    
+    CCTK_REAL CBL = PDstandard1B1 + PDstandard2B2 + PDstandard3B3;
+    
+    /* Copy local copies back to grid functions */
+    CB[index] = CBL;
+    CEl[index] = CElL;
+  }
+  CCTK_ENDLOOP3 (EM_constraints);
+}
+
+extern "C" void EM_constraints(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering EM_constraints_Body");
+  }
+  
+  if (cctk_iteration % EM_constraints_calc_every != EM_constraints_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"EMScript::B_group","EMScript::CB_group","EMScript::CEl_group","EMScript::El_group"};
+  GenericFD_AssertGroupStorage(cctkGH, "EM_constraints", 4, groups);
+  
+  switch(fdOrder)
+  {
+    case 2:
+      GenericFD_EnsureStencilFits(cctkGH, "EM_constraints", 1, 1, 1);
+      break;
+    
+    case 4:
+      GenericFD_EnsureStencilFits(cctkGH, "EM_constraints", 2, 2, 2);
+      break;
+  }
+  
+  GenericFD_LoopOverInterior(cctkGH, &EM_constraints_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving EM_constraints_Body");
+  }
+}
diff --git a/Examples/EMScript/src/EM_energy.cc b/Examples/EMScript/src/EM_energy.cc
new file mode 100644
index 0000000..50e9f94
--- /dev/null
+++ b/Examples/EMScript/src/EM_energy.cc
@@ -0,0 +1,174 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+extern "C" void EM_energy_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "EMScript::rho_group","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for EMScript::rho_group.");
+  return;
+}
+
+static void EM_energy_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare finite differencing variables */
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const t = ToReal(cctk_time);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  CCTK_LOOP3 (EM_energy,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    CCTK_REAL B1L = B1[index];
+    CCTK_REAL B2L = B2[index];
+    CCTK_REAL B3L = B3[index];
+    CCTK_REAL El1L = El1[index];
+    CCTK_REAL El2L = El2[index];
+    CCTK_REAL El3L = El3[index];
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    
+    switch(fdOrder)
+    {
+      case 2:
+        break;
+      
+      case 4:
+        break;
+    }
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL rhoL = 0.5*(SQR(B1L) + SQR(B2L) + SQR(B3L) + 
+      SQR(El1L) + SQR(El2L) + SQR(El3L));
+    
+    /* Copy local copies back to grid functions */
+    rho[index] = rhoL;
+  }
+  CCTK_ENDLOOP3 (EM_energy);
+}
+
+extern "C" void EM_energy(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering EM_energy_Body");
+  }
+  
+  if (cctk_iteration % EM_energy_calc_every != EM_energy_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"EMScript::B_group","EMScript::El_group","EMScript::rho_group"};
+  GenericFD_AssertGroupStorage(cctkGH, "EM_energy", 3, groups);
+  
+  switch(fdOrder)
+  {
+    case 2:
+      break;
+    
+    case 4:
+      break;
+  }
+  
+  GenericFD_LoopOverEverything(cctkGH, &EM_energy_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving EM_energy_Body");
+  }
+}
diff --git a/Examples/EMScript/src/EM_evol.cc b/Examples/EMScript/src/EM_evol.cc
new file mode 100644
index 0000000..ff1c8ce
--- /dev/null
+++ b/Examples/EMScript/src/EM_evol.cc
@@ -0,0 +1,229 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+extern "C" void EM_evol_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "EMScript::B_grouprhs","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for EMScript::B_grouprhs.");
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "EMScript::El_grouprhs","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for EMScript::El_grouprhs.");
+  return;
+}
+
+static void EM_evol_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare finite differencing variables */
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const t = ToReal(cctk_time);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  CCTK_LOOP3 (EM_evol,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    CCTK_REAL B1L = B1[index];
+    CCTK_REAL B2L = B2[index];
+    CCTK_REAL B3L = B3[index];
+    CCTK_REAL El1L = El1[index];
+    CCTK_REAL El2L = El2[index];
+    CCTK_REAL El3L = El3[index];
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    CCTK_REAL PDstandard2B1;
+    CCTK_REAL PDstandard3B1;
+    CCTK_REAL PDstandard1B2;
+    CCTK_REAL PDstandard3B2;
+    CCTK_REAL PDstandard1B3;
+    CCTK_REAL PDstandard2B3;
+    CCTK_REAL PDstandard2El1;
+    CCTK_REAL PDstandard3El1;
+    CCTK_REAL PDstandard1El2;
+    CCTK_REAL PDstandard3El2;
+    CCTK_REAL PDstandard1El3;
+    CCTK_REAL PDstandard2El3;
+    
+    switch(fdOrder)
+    {
+      case 2:
+        PDstandard2B1 = PDstandardfdOrder22(&B1[index]);
+        PDstandard3B1 = PDstandardfdOrder23(&B1[index]);
+        PDstandard1B2 = PDstandardfdOrder21(&B2[index]);
+        PDstandard3B2 = PDstandardfdOrder23(&B2[index]);
+        PDstandard1B3 = PDstandardfdOrder21(&B3[index]);
+        PDstandard2B3 = PDstandardfdOrder22(&B3[index]);
+        PDstandard2El1 = PDstandardfdOrder22(&El1[index]);
+        PDstandard3El1 = PDstandardfdOrder23(&El1[index]);
+        PDstandard1El2 = PDstandardfdOrder21(&El2[index]);
+        PDstandard3El2 = PDstandardfdOrder23(&El2[index]);
+        PDstandard1El3 = PDstandardfdOrder21(&El3[index]);
+        PDstandard2El3 = PDstandardfdOrder22(&El3[index]);
+        break;
+      
+      case 4:
+        PDstandard2B1 = PDstandardfdOrder42(&B1[index]);
+        PDstandard3B1 = PDstandardfdOrder43(&B1[index]);
+        PDstandard1B2 = PDstandardfdOrder41(&B2[index]);
+        PDstandard3B2 = PDstandardfdOrder43(&B2[index]);
+        PDstandard1B3 = PDstandardfdOrder41(&B3[index]);
+        PDstandard2B3 = PDstandardfdOrder42(&B3[index]);
+        PDstandard2El1 = PDstandardfdOrder42(&El1[index]);
+        PDstandard3El1 = PDstandardfdOrder43(&El1[index]);
+        PDstandard1El2 = PDstandardfdOrder41(&El2[index]);
+        PDstandard3El2 = PDstandardfdOrder43(&El2[index]);
+        PDstandard1El3 = PDstandardfdOrder41(&El3[index]);
+        PDstandard2El3 = PDstandardfdOrder42(&El3[index]);
+        break;
+    }
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL El1rhsL = PDstandard2B3 - PDstandard3B2;
+    
+    CCTK_REAL El2rhsL = -PDstandard1B3 + PDstandard3B1;
+    
+    CCTK_REAL El3rhsL = PDstandard1B2 - PDstandard2B1;
+    
+    CCTK_REAL B1rhsL = -PDstandard2El3 + PDstandard3El2;
+    
+    CCTK_REAL B2rhsL = PDstandard1El3 - PDstandard3El1;
+    
+    CCTK_REAL B3rhsL = -PDstandard1El2 + PDstandard2El1;
+    
+    /* Copy local copies back to grid functions */
+    B1rhs[index] = B1rhsL;
+    B2rhs[index] = B2rhsL;
+    B3rhs[index] = B3rhsL;
+    El1rhs[index] = El1rhsL;
+    El2rhs[index] = El2rhsL;
+    El3rhs[index] = El3rhsL;
+  }
+  CCTK_ENDLOOP3 (EM_evol);
+}
+
+extern "C" void EM_evol(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering EM_evol_Body");
+  }
+  
+  if (cctk_iteration % EM_evol_calc_every != EM_evol_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"EMScript::B_group","EMScript::B_grouprhs","EMScript::El_group","EMScript::El_grouprhs"};
+  GenericFD_AssertGroupStorage(cctkGH, "EM_evol", 4, groups);
+  
+  switch(fdOrder)
+  {
+    case 2:
+      GenericFD_EnsureStencilFits(cctkGH, "EM_evol", 1, 1, 1);
+      break;
+    
+    case 4:
+      GenericFD_EnsureStencilFits(cctkGH, "EM_evol", 2, 2, 2);
+      break;
+  }
+  
+  GenericFD_LoopOverInterior(cctkGH, &EM_evol_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving EM_evol_Body");
+  }
+}
diff --git a/Examples/EMScript/src/EM_initial.cc b/Examples/EMScript/src/EM_initial.cc
new file mode 100644
index 0000000..ddbd59e
--- /dev/null
+++ b/Examples/EMScript/src/EM_initial.cc
@@ -0,0 +1,191 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "cctk_Loop.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE (42)
+#define QAD(x) (SQR(SQR(x)))
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+
+extern "C" void EM_initial_SelectBCs(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "EMScript::B_group","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for EMScript::B_group.");
+  ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "EMScript::El_group","flat");
+  if (ierr < 0)
+    CCTK_WARN(1, "Failed to register flat BC for EMScript::El_group.");
+  return;
+}
+
+static void EM_initial_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const imin[3], int const imax[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare finite differencing variables */
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  ptrdiff_t const di = 1;
+  ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0);
+  ptrdiff_t const cdi = sizeof(CCTK_REAL) * di;
+  ptrdiff_t const cdj = sizeof(CCTK_REAL) * dj;
+  ptrdiff_t const cdk = sizeof(CCTK_REAL) * dk;
+  CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0));
+  CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1));
+  CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2));
+  CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME);
+  CCTK_REAL const t = ToReal(cctk_time);
+  CCTK_REAL const dxi = INV(dx);
+  CCTK_REAL const dyi = INV(dy);
+  CCTK_REAL const dzi = INV(dz);
+  CCTK_REAL const khalf = 0.5;
+  CCTK_REAL const kthird = 1/3.0;
+  CCTK_REAL const ktwothird = 2.0/3.0;
+  CCTK_REAL const kfourthird = 4.0/3.0;
+  CCTK_REAL const keightthird = 8.0/3.0;
+  CCTK_REAL const hdxi = 0.5 * dxi;
+  CCTK_REAL const hdyi = 0.5 * dyi;
+  CCTK_REAL const hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  CCTK_REAL const p1o12dx = 0.0833333333333333333333333333333*INV(dx);
+  CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy);
+  CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz);
+  CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy);
+  CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz);
+  CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz);
+  CCTK_REAL const p1o2dx = 0.5*INV(dx);
+  CCTK_REAL const p1o2dy = 0.5*INV(dy);
+  CCTK_REAL const p1o2dz = 0.5*INV(dz);
+  CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy);
+  CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz);
+  CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz);
+  CCTK_REAL const p1odx2 = INV(SQR(dx));
+  CCTK_REAL const p1ody2 = INV(SQR(dy));
+  CCTK_REAL const p1odz2 = INV(SQR(dz));
+  CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx));
+  CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy));
+  CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz));
+  
+  /* Assign local copies of arrays functions */
+  
+  
+  
+  /* Calculate temporaries and arrays functions */
+  
+  /* Copy local copies back to grid functions */
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  CCTK_LOOP3 (EM_initial,
+    i,j,k, imin[0],imin[1],imin[2], imax[0],imax[1],imax[2],
+    cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    ptrdiff_t const index = di*i + dj*j + dk*k;
+    
+    /* Assign local copies of grid functions */
+    
+    CCTK_REAL xL = x[index];
+    CCTK_REAL yL = y[index];
+    
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives */
+    
+    switch(fdOrder)
+    {
+      case 2:
+        break;
+      
+      case 4:
+        break;
+    }
+    
+    /* Calculate temporaries and grid functions */
+    CCTK_REAL sigma = 1;
+    
+    CCTK_REAL El1L = sigma*Cos(2*(xL + yL)*Pi);
+    
+    CCTK_REAL El2L = (-1 + sigma)*Cos(2*xL*Pi) - sigma*Cos(2*(xL + 
+      yL)*Pi);
+    
+    CCTK_REAL El3L = 0;
+    
+    CCTK_REAL B1L = 0;
+    
+    CCTK_REAL B2L = 0;
+    
+    CCTK_REAL B3L = -((-1 + sigma)*Cos(2*xL*Pi)) + sigma*Cos(2*(xL + 
+      yL)*Pi);
+    
+    /* Copy local copies back to grid functions */
+    B1[index] = B1L;
+    B2[index] = B2L;
+    B3[index] = B3L;
+    El1[index] = El1L;
+    El2[index] = El2L;
+    El3[index] = El3L;
+  }
+  CCTK_ENDLOOP3 (EM_initial);
+}
+
+extern "C" void EM_initial(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering EM_initial_Body");
+  }
+  
+  if (cctk_iteration % EM_initial_calc_every != EM_initial_calc_offset)
+  {
+    return;
+  }
+  
+  const char *groups[] = {"EMScript::B_group","EMScript::El_group","grid::coordinates"};
+  GenericFD_AssertGroupStorage(cctkGH, "EM_initial", 3, groups);
+  
+  switch(fdOrder)
+  {
+    case 2:
+      break;
+    
+    case 4:
+      break;
+  }
+  
+  GenericFD_LoopOverEverything(cctkGH, &EM_initial_Body);
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Leaving EM_initial_Body");
+  }
+}
diff --git a/Examples/EMScript/src/RegisterMoL.cc b/Examples/EMScript/src/RegisterMoL.cc
new file mode 100644
index 0000000..749736a
--- /dev/null
+++ b/Examples/EMScript/src/RegisterMoL.cc
@@ -0,0 +1,24 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+
+extern "C" void EMScript_RegisterVars(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  
+  /* Register all the evolved grid functions with MoL */
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("EMScript::B1"),  CCTK_VarIndex("EMScript::B1rhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("EMScript::B2"),  CCTK_VarIndex("EMScript::B2rhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("EMScript::B3"),  CCTK_VarIndex("EMScript::B3rhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("EMScript::El1"),  CCTK_VarIndex("EMScript::El1rhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("EMScript::El2"),  CCTK_VarIndex("EMScript::El2rhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("EMScript::El3"),  CCTK_VarIndex("EMScript::El3rhs"));
+  
+  /* Register all the evolved Array functions with MoL */
+  return;
+}
diff --git a/Examples/EMScript/src/RegisterSymmetries.cc b/Examples/EMScript/src/RegisterSymmetries.cc
new file mode 100644
index 0000000..a7224c9
--- /dev/null
+++ b/Examples/EMScript/src/RegisterSymmetries.cc
@@ -0,0 +1,64 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "Symmetry.h"
+
+extern "C" void EMScript_RegisterSymmetries(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* array holding symmetry definitions */
+  CCTK_INT sym[3];
+  
+  
+  /* Register symmetries of grid functions */
+  sym[0] = -1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "EMScript::B1");
+  
+  sym[0] = 1;
+  sym[1] = -1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "EMScript::B2");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = -1;
+  SetCartSymVN(cctkGH, sym, "EMScript::B3");
+  
+  sym[0] = -1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "EMScript::El1");
+  
+  sym[0] = 1;
+  sym[1] = -1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "EMScript::El2");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = -1;
+  SetCartSymVN(cctkGH, sym, "EMScript::El3");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "EMScript::CB");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "EMScript::CEl");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "EMScript::rho");
+  
+}
diff --git a/Examples/EMScript/src/Startup.cc b/Examples/EMScript/src/Startup.cc
new file mode 100644
index 0000000..00bdff6
--- /dev/null
+++ b/Examples/EMScript/src/Startup.cc
@@ -0,0 +1,10 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+
+extern "C" int EMScript_Startup(void)
+{
+  const char * banner = "EMScript";
+  CCTK_RegisterBanner(banner);
+  return 0;
+}
diff --git a/Examples/EMScript/src/make.code.defn b/Examples/EMScript/src/make.code.defn
new file mode 100644
index 0000000..0d52b41
--- /dev/null
+++ b/Examples/EMScript/src/make.code.defn
@@ -0,0 +1,3 @@
+# File produced by Kranc
+
+SRCS = Startup.cc RegisterMoL.cc RegisterSymmetries.cc EM_initial.cc EM_evol.cc EM_constraints.cc EM_energy.cc Boundaries.cc