Rename FOWaveToy to WaveToyFO

13 files changed, 1540 insertions, 0 deletions

diff --git a/ML_WaveToyFO/configuration.ccl b/ML_WaveToyFO/configuration.ccl
new file mode 100644
index 0000000..8e2c3c5
--- /dev/null
+++ b/ML_WaveToyFO/configuration.ccl
@@ -0,0 +1,4 @@
+# File produced by Kranc
+
+REQUIRES GenericFD
+REQUIRES LoopControl
diff --git a/ML_WaveToyFO/interface.ccl b/ML_WaveToyFO/interface.ccl
new file mode 100644
index 0000000..a9f7ff5
--- /dev/null
+++ b/ML_WaveToyFO/interface.ccl
@@ -0,0 +1,73 @@
+# File produced by Kranc
+
+implements: ML_WaveToyFO
+
+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 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 WT_w type=GF timelevels=1 tags='tensortypealias="U" tensorweight=1.0000000000000000000'
+{
+  w1,
+  w2,
+  w3
+} "WT_w"
+
+public:
+CCTK_REAL WT_rho type=GF timelevels=2 tags='tensortypealias="Scalar" tensorweight=1.0000000000000000000'
+{
+  rho
+} "WT_rho"
+
+public:
+CCTK_REAL WT_u type=GF timelevels=2 tags='tensortypealias="Scalar" tensorweight=1.0000000000000000000'
+{
+  u
+} "WT_u"
+
+public:
+CCTK_REAL WT_v type=GF timelevels=2 tags='tensortypealias="D" tensorweight=1.0000000000000000000'
+{
+  v1,
+  v2,
+  v3
+} "WT_v"
+
+public:
+CCTK_REAL WT_rhorhs type=GF timelevels=2 tags='tensortypealias="Scalar" tensorweight=1.0000000000000000000'
+{
+  rhorhs
+} "WT_rhorhs"
+
+public:
+CCTK_REAL WT_urhs type=GF timelevels=2 tags='tensortypealias="Scalar" tensorweight=1.0000000000000000000'
+{
+  urhs
+} "WT_urhs"
+
+public:
+CCTK_REAL WT_vrhs type=GF timelevels=2 tags='tensortypealias="D" tensorweight=1.0000000000000000000'
+{
+  v1rhs,
+  v2rhs,
+  v3rhs
+} "WT_vrhs"
diff --git a/ML_WaveToyFO/param.ccl b/ML_WaveToyFO/param.ccl
new file mode 100644
index 0000000..a75f0b5
--- /dev/null
+++ b/ML_WaveToyFO/param.ccl
@@ -0,0 +1,316 @@
+# File produced by Kranc
+
+
+shares: GenericFD
+
+USES CCTK_INT stencil_width
+USES CCTK_INT stencil_width_x
+USES CCTK_INT stencil_width_y
+USES CCTK_INT stencil_width_z
+USES CCTK_INT boundary_width
+
+
+shares: MethodOfLines
+
+USES CCTK_INT MoL_Num_Evolved_Vars
+
+restricted:
+CCTK_INT verbose "verbose"
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT ML_WaveToyFO_MaxNumEvolvedVars "Number of evolved variables used by this thorn" ACCUMULATOR-BASE=MethodofLines::MoL_Num_Evolved_Vars
+{
+  5:5 :: "Number of evolved variables used by this thorn"
+} 5
+
+restricted:
+CCTK_INT timelevels "Number of active timelevels"
+{
+  0:2 :: ""
+} 2
+
+restricted:
+CCTK_INT rhs_timelevels "Number of active RHS timelevels"
+{
+  0:2 :: ""
+} 1
+
+restricted:
+CCTK_INT WTFO_Gaussian_calc_every "WTFO_Gaussian_calc_every"
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT WTFO_RHS_calc_every "WTFO_RHS_calc_every"
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT WTFO_constraints_calc_every "WTFO_constraints_calc_every"
+{
+  *:* :: ""
+} 1
+
+restricted:
+CCTK_INT WTFO_Gaussian_calc_offset "WTFO_Gaussian_calc_offset"
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT WTFO_RHS_calc_offset "WTFO_RHS_calc_offset"
+{
+  *:* :: ""
+} 0
+
+restricted:
+CCTK_INT WTFO_constraints_calc_offset "WTFO_constraints_calc_offset"
+{
+  *:* :: ""
+} 0
+
+private:
+KEYWORD rho_bound "Boundary condition to implement"
+{
+  "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 u_bound "Boundary condition to implement"
+{
+  "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 v1_bound "Boundary condition to implement"
+{
+  "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 v2_bound "Boundary condition to implement"
+{
+  "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 v3_bound "Boundary condition to implement"
+{
+  "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 WT_rho_bound "Boundary condition to implement"
+{
+  "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 WT_u_bound "Boundary condition to implement"
+{
+  "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 WT_v_bound "Boundary condition to implement"
+{
+  "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:
+CCTK_REAL rho_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL u_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL v1_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL v2_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL v3_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL WT_rho_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL WT_u_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL WT_v_bound_speed "characteristic speed at boundary"
+{
+  "0:*" :: "outgoing characteristic speed > 0"
+} 1.
+
+private:
+CCTK_REAL rho_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL u_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL v1_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL v2_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL v3_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_rho_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_u_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_v_bound_limit "limit value for r -> infinity"
+{
+  "*:*" :: "value of limit value is unrestricted"
+} 0.
+
+private:
+CCTK_REAL rho_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL u_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL v1_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL v2_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL v3_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_rho_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_u_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
+private:
+CCTK_REAL WT_v_bound_scalar "Dirichlet boundary value"
+{
+  "*:*" :: "unrestricted"
+} 0.
+
diff --git a/ML_WaveToyFO/schedule.ccl b/ML_WaveToyFO/schedule.ccl
new file mode 100644
index 0000000..4aea873
--- /dev/null
+++ b/ML_WaveToyFO/schedule.ccl
@@ -0,0 +1,120 @@
+# File produced by Kranc
+
+
+STORAGE: WT_w[1]
+
+if (timelevels == 1)
+{
+  STORAGE: WT_rho[1]
+}
+if (timelevels == 2)
+{
+  STORAGE: WT_rho[2]
+}
+
+if (timelevels == 1)
+{
+  STORAGE: WT_u[1]
+}
+if (timelevels == 2)
+{
+  STORAGE: WT_u[2]
+}
+
+if (timelevels == 1)
+{
+  STORAGE: WT_v[1]
+}
+if (timelevels == 2)
+{
+  STORAGE: WT_v[2]
+}
+
+if (rhs_timelevels == 1)
+{
+  STORAGE: WT_rhorhs[1]
+}
+if (rhs_timelevels == 2)
+{
+  STORAGE: WT_rhorhs[2]
+}
+
+if (rhs_timelevels == 1)
+{
+  STORAGE: WT_urhs[1]
+}
+if (rhs_timelevels == 2)
+{
+  STORAGE: WT_urhs[2]
+}
+
+if (rhs_timelevels == 1)
+{
+  STORAGE: WT_vrhs[1]
+}
+if (rhs_timelevels == 2)
+{
+  STORAGE: WT_vrhs[2]
+}
+
+schedule ML_WaveToyFO_Startup at STARTUP
+{
+  LANG: C
+  OPTIONS: meta
+} "create banner"
+
+schedule ML_WaveToyFO_RegisterVars in MoL_Register
+{
+  LANG: C
+  OPTIONS: meta
+} "Register Variables for MoL"
+
+schedule ML_WaveToyFO_RegisterSymmetries in SymmetryRegister
+{
+  LANG: C
+  OPTIONS: meta
+} "register symmetries"
+
+schedule WTFO_Gaussian AT initial
+{
+  LANG: C
+} "WTFO_Gaussian"
+
+schedule WTFO_RHS IN MoL_CalcRHS
+{
+  LANG: C
+} "WTFO_RHS"
+
+schedule WTFO_RHS AT analysis
+{
+  LANG: C
+  SYNC: WT_rhorhs
+  SYNC: WT_urhs
+  SYNC: WT_vrhs
+} "WTFO_RHS"
+
+schedule WTFO_constraints AT analysis
+{
+  LANG: C
+  SYNC: WT_w
+} "WTFO_constraints"
+
+schedule ML_WaveToyFO_ApplyBoundConds in MoL_PostStep
+{
+  LANG: C
+  OPTIONS: level
+  SYNC: WT_rho
+  SYNC: WT_u
+  SYNC: WT_v
+} "apply boundary conditions"
+
+schedule ML_WaveToyFO_CheckBoundaries at BASEGRID
+{
+  LANG: C
+  OPTIONS: meta
+} "check boundaries treatment"
+
+schedule group ApplyBCs as ML_WaveToyFO_ApplyBCs in MoL_PostStep  after ML_WaveToyFO_ApplyBoundConds
+{
+  # no language specified
+} "Apply boundary conditions controlled by thorn Boundary"
diff --git a/ML_WaveToyFO/src/Boundaries.c b/ML_WaveToyFO/src/Boundaries.c
new file mode 100644
index 0000000..6c25491
--- /dev/null
+++ b/ML_WaveToyFO/src/Boundaries.c
@@ -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      */
+
+
+void ML_WaveToyFO_CheckBoundaries(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  return;
+}
+
+void ML_WaveToyFO_ApplyBoundConds(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  CCTK_INT ierr = 0;
+  
+  if (CCTK_EQUALS(WT_rho_bound, "none"  ) ||
+      CCTK_EQUALS(WT_rho_bound, "static") ||
+      CCTK_EQUALS(WT_rho_bound, "flat"  ) ||
+      CCTK_EQUALS(WT_rho_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "ML_WaveToyFO::WT_rho", WT_rho_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register WT_rho_bound BC for ML_WaveToyFO::WT_rho!");
+  }
+  
+  if (CCTK_EQUALS(WT_u_bound, "none"  ) ||
+      CCTK_EQUALS(WT_u_bound, "static") ||
+      CCTK_EQUALS(WT_u_bound, "flat"  ) ||
+      CCTK_EQUALS(WT_u_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "ML_WaveToyFO::WT_u", WT_u_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register WT_u_bound BC for ML_WaveToyFO::WT_u!");
+  }
+  
+  if (CCTK_EQUALS(WT_v_bound, "none"  ) ||
+      CCTK_EQUALS(WT_v_bound, "static") ||
+      CCTK_EQUALS(WT_v_bound, "flat"  ) ||
+      CCTK_EQUALS(WT_v_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "ML_WaveToyFO::WT_v", WT_v_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register WT_v_bound BC for ML_WaveToyFO::WT_v!");
+  }
+  
+  if (CCTK_EQUALS(rho_bound, "none"  ) ||
+      CCTK_EQUALS(rho_bound, "static") ||
+      CCTK_EQUALS(rho_bound, "flat"  ) ||
+      CCTK_EQUALS(rho_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "ML_WaveToyFO::rho", rho_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register rho_bound BC for ML_WaveToyFO::rho!");
+  }
+  
+  if (CCTK_EQUALS(u_bound, "none"  ) ||
+      CCTK_EQUALS(u_bound, "static") ||
+      CCTK_EQUALS(u_bound, "flat"  ) ||
+      CCTK_EQUALS(u_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "ML_WaveToyFO::u", u_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register u_bound BC for ML_WaveToyFO::u!");
+  }
+  
+  if (CCTK_EQUALS(v1_bound, "none"  ) ||
+      CCTK_EQUALS(v1_bound, "static") ||
+      CCTK_EQUALS(v1_bound, "flat"  ) ||
+      CCTK_EQUALS(v1_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "ML_WaveToyFO::v1", v1_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register v1_bound BC for ML_WaveToyFO::v1!");
+  }
+  
+  if (CCTK_EQUALS(v2_bound, "none"  ) ||
+      CCTK_EQUALS(v2_bound, "static") ||
+      CCTK_EQUALS(v2_bound, "flat"  ) ||
+      CCTK_EQUALS(v2_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "ML_WaveToyFO::v2", v2_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register v2_bound BC for ML_WaveToyFO::v2!");
+  }
+  
+  if (CCTK_EQUALS(v3_bound, "none"  ) ||
+      CCTK_EQUALS(v3_bound, "static") ||
+      CCTK_EQUALS(v3_bound, "flat"  ) ||
+      CCTK_EQUALS(v3_bound, "zero"  ) ) 
+  {
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, -1, 
+                      "ML_WaveToyFO::v3", v3_bound);
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register v3_bound BC for ML_WaveToyFO::v3!");
+  }
+  
+  if (CCTK_EQUALS(WT_rho_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    static CCTK_INT handle_WT_rho_bound = -1;
+    if (handle_WT_rho_bound < 0) handle_WT_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_rho_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_rho_bound , WT_rho_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_WT_rho_bound ,WT_rho_bound_speed, "SPEED") < 0)
+       CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_rho_bound, 
+                      "ML_WaveToyFO::WT_rho", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToyFO::WT_rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_u_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    static CCTK_INT handle_WT_u_bound = -1;
+    if (handle_WT_u_bound < 0) handle_WT_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_u_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_u_bound , WT_u_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_WT_u_bound ,WT_u_bound_speed, "SPEED") < 0)
+       CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_u_bound, 
+                      "ML_WaveToyFO::WT_u", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToyFO::WT_u!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_v_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    static CCTK_INT handle_WT_v_bound = -1;
+    if (handle_WT_v_bound < 0) handle_WT_v_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_v_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_v_bound , WT_v_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_WT_v_bound ,WT_v_bound_speed, "SPEED") < 0)
+       CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_v_bound, 
+                      "ML_WaveToyFO::WT_v", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToyFO::WT_v!");
+  
+  }
+  
+  if (CCTK_EQUALS(rho_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    static CCTK_INT handle_rho_bound = -1;
+    if (handle_rho_bound < 0) handle_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_rho_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_rho_bound , rho_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_rho_bound ,rho_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_rho_bound, 
+                      "ML_WaveToyFO::rho", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToyFO::rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(u_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    static CCTK_INT handle_u_bound = -1;
+    if (handle_u_bound < 0) handle_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_u_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_u_bound , u_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_u_bound ,u_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_u_bound, 
+                      "ML_WaveToyFO::u", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToyFO::u!");
+  
+  }
+  
+  if (CCTK_EQUALS(v1_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    static CCTK_INT handle_v1_bound = -1;
+    if (handle_v1_bound < 0) handle_v1_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v1_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_v1_bound , v1_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_v1_bound ,v1_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v1_bound, 
+                      "ML_WaveToyFO::v1", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToyFO::v1!");
+  
+  }
+  
+  if (CCTK_EQUALS(v2_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    static CCTK_INT handle_v2_bound = -1;
+    if (handle_v2_bound < 0) handle_v2_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v2_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_v2_bound , v2_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_v2_bound ,v2_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v2_bound, 
+                      "ML_WaveToyFO::v2", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToyFO::v2!");
+  
+  }
+  
+  if (CCTK_EQUALS(v3_bound, "radiative"))
+  {
+   /* apply radiation boundary condition */
+    static CCTK_INT handle_v3_bound = -1;
+    if (handle_v3_bound < 0) handle_v3_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v3_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_v3_bound , v3_bound_limit, "LIMIT") < 0)
+       CCTK_WARN(0, "could not set LIMIT value in table!");
+    if (Util_TableSetReal(handle_v3_bound ,v3_bound_speed, "SPEED") < 0)
+        CCTK_WARN(0, "could not set SPEED value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v3_bound, 
+                      "ML_WaveToyFO::v3", "Radiation");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Radiation BC for ML_WaveToyFO::v3!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_rho_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    static CCTK_INT handle_WT_rho_bound = -1;
+    if (handle_WT_rho_bound < 0) handle_WT_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_rho_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_rho_bound ,WT_rho_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_rho_bound, 
+                      "ML_WaveToyFO::WT_rho", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Scalar BC for ML_WaveToyFO::WT_rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_u_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    static CCTK_INT handle_WT_u_bound = -1;
+    if (handle_WT_u_bound < 0) handle_WT_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_u_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_u_bound ,WT_u_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_u_bound, 
+                      "ML_WaveToyFO::WT_u", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Scalar BC for ML_WaveToyFO::WT_u!");
+  
+  }
+  
+  if (CCTK_EQUALS(WT_v_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    static CCTK_INT handle_WT_v_bound = -1;
+    if (handle_WT_v_bound < 0) handle_WT_v_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_WT_v_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_WT_v_bound ,WT_v_bound_scalar, "SCALAR") < 0)
+        CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, 1, handle_WT_v_bound, 
+                      "ML_WaveToyFO::WT_v", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Failed to register Scalar BC for ML_WaveToyFO::WT_v!");
+  
+  }
+  
+  if (CCTK_EQUALS(rho_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    static CCTK_INT handle_rho_bound = -1;
+    if (handle_rho_bound < 0) handle_rho_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_rho_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_rho_bound ,rho_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_rho_bound, 
+                      "ML_WaveToyFO::rho", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for ML_WaveToyFO::rho!");
+  
+  }
+  
+  if (CCTK_EQUALS(u_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    static CCTK_INT handle_u_bound = -1;
+    if (handle_u_bound < 0) handle_u_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_u_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_u_bound ,u_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_u_bound, 
+                      "ML_WaveToyFO::u", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for ML_WaveToyFO::u!");
+  
+  }
+  
+  if (CCTK_EQUALS(v1_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    static CCTK_INT handle_v1_bound = -1;
+    if (handle_v1_bound < 0) handle_v1_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v1_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_v1_bound ,v1_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v1_bound, 
+                      "ML_WaveToyFO::v1", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for ML_WaveToyFO::v1!");
+  
+  }
+  
+  if (CCTK_EQUALS(v2_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    static CCTK_INT handle_v2_bound = -1;
+    if (handle_v2_bound < 0) handle_v2_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v2_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_v2_bound ,v2_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v2_bound, 
+                      "ML_WaveToyFO::v2", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for ML_WaveToyFO::v2!");
+  
+  }
+  
+  if (CCTK_EQUALS(v3_bound, "scalar"))
+  {
+   /* apply scalar boundary condition */
+    static CCTK_INT handle_v3_bound = -1;
+    if (handle_v3_bound < 0) handle_v3_bound = Util_TableCreate(UTIL_TABLE_FLAGS_CASE_INSENSITIVE);
+    if (handle_v3_bound < 0) CCTK_WARN(0, "could not create table!");
+    if (Util_TableSetReal(handle_v3_bound ,v3_bound_scalar, "SCALAR") < 0)
+      CCTK_WARN(0, "could not set SCALAR value in table!");
+  
+    ierr = Boundary_SelectVarForBC(cctkGH, CCTK_ALL_FACES, 1, handle_v3_bound, 
+                      "ML_WaveToyFO::v3", "scalar");
+  
+    if (ierr < 0)
+       CCTK_WARN(0, "Error in registering Scalar BC for ML_WaveToyFO::v3!");
+  
+  }
+  return;
+}
+
+
+
+/* template for entries in parameter file:
+#$bound$#ML_WaveToyFO::WT_rho_bound       = "skip"
+#$bound$#ML_WaveToyFO::WT_rho_bound_speed = 1.0
+#$bound$#ML_WaveToyFO::WT_rho_bound_limit = 0.0
+#$bound$#ML_WaveToyFO::WT_rho_bound_scalar = 0.0
+
+#$bound$#ML_WaveToyFO::WT_u_bound       = "skip"
+#$bound$#ML_WaveToyFO::WT_u_bound_speed = 1.0
+#$bound$#ML_WaveToyFO::WT_u_bound_limit = 0.0
+#$bound$#ML_WaveToyFO::WT_u_bound_scalar = 0.0
+
+#$bound$#ML_WaveToyFO::WT_v_bound       = "skip"
+#$bound$#ML_WaveToyFO::WT_v_bound_speed = 1.0
+#$bound$#ML_WaveToyFO::WT_v_bound_limit = 0.0
+#$bound$#ML_WaveToyFO::WT_v_bound_scalar = 0.0
+
+#$bound$#ML_WaveToyFO::rho_bound       = "skip"
+#$bound$#ML_WaveToyFO::rho_bound_speed = 1.0
+#$bound$#ML_WaveToyFO::rho_bound_limit = 0.0
+#$bound$#ML_WaveToyFO::rho_bound_scalar = 0.0
+
+#$bound$#ML_WaveToyFO::u_bound       = "skip"
+#$bound$#ML_WaveToyFO::u_bound_speed = 1.0
+#$bound$#ML_WaveToyFO::u_bound_limit = 0.0
+#$bound$#ML_WaveToyFO::u_bound_scalar = 0.0
+
+#$bound$#ML_WaveToyFO::v1_bound       = "skip"
+#$bound$#ML_WaveToyFO::v1_bound_speed = 1.0
+#$bound$#ML_WaveToyFO::v1_bound_limit = 0.0
+#$bound$#ML_WaveToyFO::v1_bound_scalar = 0.0
+
+#$bound$#ML_WaveToyFO::v2_bound       = "skip"
+#$bound$#ML_WaveToyFO::v2_bound_speed = 1.0
+#$bound$#ML_WaveToyFO::v2_bound_limit = 0.0
+#$bound$#ML_WaveToyFO::v2_bound_scalar = 0.0
+
+#$bound$#ML_WaveToyFO::v3_bound       = "skip"
+#$bound$#ML_WaveToyFO::v3_bound_speed = 1.0
+#$bound$#ML_WaveToyFO::v3_bound_limit = 0.0
+#$bound$#ML_WaveToyFO::v3_bound_scalar = 0.0
+
+*/
+
diff --git a/ML_WaveToyFO/src/Differencing.h b/ML_WaveToyFO/src/Differencing.h
new file mode 100644
index 0000000..ae119d2
--- /dev/null
+++ b/ML_WaveToyFO/src/Differencing.h
@@ -0,0 +1,12 @@
+#define PDstandardNth1(u,i,j,k) (p1o12dx*(-8*(u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(k))] + 8*(u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(k))]))
+#define PDstandardNth2(u,i,j,k) (p1o12dy*(-8*(u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(k))] + 8*(u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(k))]))
+#define PDstandardNth3(u,i,j,k) (p1o12dz*(-8*(u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(-1 + k))] + 8*(u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(-2 + k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(2 + k))]))
+#define PDstandardNth11(u,i,j,k) (pm1o12dx2*(-16*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(k))]) + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(k))] + 30*(u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(k))]))
+#define PDstandardNth22(u,i,j,k) (pm1o12dy2*(-16*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(k))]) + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(k))] + 30*(u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(k))]))
+#define PDstandardNth33(u,i,j,k) (pm1o12dz2*(-16*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(-1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(1 + k))]) + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(2 + k))] + 30*(u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(j),(int)(k))]))
+#define PDstandardNth12(u,i,j,k) (p1o144dxdy*(-64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(-1 + j),(int)(k))]) + 64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(-1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(1 + j),(int)(k))]) + 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(-2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(-1 + j),(int)(k))]) - 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(-2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(-1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(1 + j),(int)(k))]) + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(-2 + j),(int)(k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(2 + j),(int)(k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(-2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(2 + j),(int)(k))]))
+#define PDstandardNth13(u,i,j,k) (p1o144dxdz*(-64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(-1 + k))]) + 64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(-1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(1 + k))]) + 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(-1 + k))]) - 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(-1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(1 + k))]) + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(-2 + k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(2 + k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(2 + k))]))
+#define PDstandardNth21(u,i,j,k) (p1o144dxdy*(-64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(-1 + j),(int)(k))]) + 64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(-1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(1 + j),(int)(k))]) + 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(-2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(-1 + j),(int)(k))]) - 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(-2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(-1 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(1 + j),(int)(k))]) + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(-2 + j),(int)(k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(2 + j),(int)(k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(-2 + j),(int)(k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(2 + j),(int)(k))]))
+#define PDstandardNth23(u,i,j,k) (p1o144dydz*(-64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(-1 + k))]) + 64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(-1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(1 + k))]) + 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(-1 + k))]) - 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(-1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(1 + k))]) + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(-2 + k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(2 + k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(2 + k))]))
+#define PDstandardNth31(u,i,j,k) (p1o144dxdz*(-64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(-1 + k))]) + 64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(-1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(1 + k))]) + 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(-1 + k))]) - 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(-1 + i),(int)(j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(1 + i),(int)(j),(int)(2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(-1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(1 + k))]) + (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(-2 + k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(-2 + i),(int)(j),(int)(2 + k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(2 + i),(int)(j),(int)(2 + k))]))
+#define PDstandardNth32(u,i,j,k) (p1o144dydz*(-64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(-1 + k))]) + 64*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(-1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(1 + k))]) + 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(-1 + k))]) - 8*((u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-1 + j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(1 + j),(int)(2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(-1 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(1 + k))]) + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(-2 + k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(-2 + j),(int)(2 + k))] - (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(-2 + k))] + (u)[CCTK_GFINDEX3D(cctkGH,(int)(i),(int)(2 + j),(int)(2 + k))]))
diff --git a/ML_WaveToyFO/src/RegisterMoL.c b/ML_WaveToyFO/src/RegisterMoL.c
new file mode 100644
index 0000000..e6734d4
--- /dev/null
+++ b/ML_WaveToyFO/src/RegisterMoL.c
@@ -0,0 +1,21 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+
+void ML_WaveToyFO_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("ML_WaveToyFO::rho"),  CCTK_VarIndex("ML_WaveToyFO::rhorhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("ML_WaveToyFO::u"),  CCTK_VarIndex("ML_WaveToyFO::urhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("ML_WaveToyFO::v1"),  CCTK_VarIndex("ML_WaveToyFO::v1rhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("ML_WaveToyFO::v2"),  CCTK_VarIndex("ML_WaveToyFO::v2rhs"));
+  ierr += MoLRegisterEvolved(CCTK_VarIndex("ML_WaveToyFO::v3"),  CCTK_VarIndex("ML_WaveToyFO::v3rhs"));
+  return;
+}
diff --git a/ML_WaveToyFO/src/RegisterSymmetries.c b/ML_WaveToyFO/src/RegisterSymmetries.c
new file mode 100644
index 0000000..d6515c5
--- /dev/null
+++ b/ML_WaveToyFO/src/RegisterSymmetries.c
@@ -0,0 +1,59 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "Symmetry.h"
+
+void ML_WaveToyFO_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, "ML_WaveToyFO::rho");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToyFO::u");
+  
+  sym[0] = -1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToyFO::v1");
+  
+  sym[0] = 1;
+  sym[1] = -1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToyFO::v2");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = -1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToyFO::v3");
+  
+  sym[0] = -1;
+  sym[1] = 1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToyFO::w1");
+  
+  sym[0] = 1;
+  sym[1] = -1;
+  sym[2] = 1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToyFO::w2");
+  
+  sym[0] = 1;
+  sym[1] = 1;
+  sym[2] = -1;
+  SetCartSymVN(cctkGH, sym, "ML_WaveToyFO::w3");
+  
+}
diff --git a/ML_WaveToyFO/src/Startup.c b/ML_WaveToyFO/src/Startup.c
new file mode 100644
index 0000000..76fb99a
--- /dev/null
+++ b/ML_WaveToyFO/src/Startup.c
@@ -0,0 +1,10 @@
+/*  File produced by Kranc */
+
+#include "cctk.h"
+
+int ML_WaveToyFO_Startup(void)
+{
+  const char * banner = "ML_WaveToyFO";
+  CCTK_RegisterBanner(banner);
+  return 0;
+}
diff --git a/ML_WaveToyFO/src/WTFO_Gaussian.c b/ML_WaveToyFO/src/WTFO_Gaussian.c
new file mode 100644
index 0000000..78e0ef3
--- /dev/null
+++ b/ML_WaveToyFO/src/WTFO_Gaussian.c
@@ -0,0 +1,147 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE  (42)
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+#define QAD(x) ((x) * (x) * (x) * (x))
+
+void WTFO_Gaussian_Body(cGH const * const cctkGH, CCTK_INT const dir, CCTK_INT const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], CCTK_INT const min[3], CCTK_INT const max[3], CCTK_INT const n_subblock_gfs, CCTK_REAL * const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare finite differencing variables */
+  CCTK_REAL dx = INITVALUE, dy = INITVALUE, dz = INITVALUE;
+  CCTK_REAL dxi = INITVALUE, dyi = INITVALUE, dzi = INITVALUE;
+  CCTK_REAL khalf = INITVALUE, kthird = INITVALUE, ktwothird = INITVALUE, kfourthird = INITVALUE, keightthird = INITVALUE;
+  CCTK_REAL hdxi = INITVALUE, hdyi = INITVALUE, hdzi = INITVALUE;
+  
+  
+  /* Declare predefined quantities */
+  CCTK_REAL p1o12dx = INITVALUE;
+  CCTK_REAL p1o12dy = INITVALUE;
+  CCTK_REAL p1o12dz = INITVALUE;
+  CCTK_REAL p1o144dxdy = INITVALUE;
+  CCTK_REAL p1o144dxdz = INITVALUE;
+  CCTK_REAL p1o144dydz = INITVALUE;
+  CCTK_REAL pm1o12dx2 = INITVALUE;
+  CCTK_REAL pm1o12dy2 = INITVALUE;
+  CCTK_REAL pm1o12dz2 = INITVALUE;
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WTFO_Gaussian_Body");
+  }
+  
+  if (cctk_iteration % WTFO_Gaussian_calc_every != WTFO_Gaussian_calc_offset)
+  {
+    return;
+  }
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  dx = CCTK_DELTA_SPACE(0);
+  dy = CCTK_DELTA_SPACE(1);
+  dz = CCTK_DELTA_SPACE(2);
+  dxi = 1.0 / dx;
+  dyi = 1.0 / dy;
+  dzi = 1.0 / dz;
+  khalf = 0.5;
+  kthird = 1/3.0;
+  ktwothird = 2.0/3.0;
+  kfourthird = 4.0/3.0;
+  keightthird = 8.0/3.0;
+  hdxi = 0.5 * dxi;
+  hdyi = 0.5 * dyi;
+  hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  p1o12dx = INV(dx)/12.;
+  p1o12dy = INV(dy)/12.;
+  p1o12dz = INV(dz)/12.;
+  p1o144dxdy = (INV(dx)*INV(dy))/144.;
+  p1o144dxdz = (INV(dx)*INV(dz))/144.;
+  p1o144dydz = (INV(dy)*INV(dz))/144.;
+  pm1o12dx2 = -pow(dx,-2)/12.;
+  pm1o12dy2 = -pow(dy,-2)/12.;
+  pm1o12dz2 = -pow(dz,-2)/12.;
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  LC_LOOP3 (WTFO_Gaussian,
+            i,j,k, min[0],min[1],min[2], max[0],max[1],max[2],
+            cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    int index = INITVALUE;
+    int subblock_index = INITVALUE;
+    index = CCTK_GFINDEX3D(cctkGH,i,j,k);
+    subblock_index = i - min[0] + (max[0] - min[0]) * (j - min[1] + (max[1]-min[1]) * (k - min[2]));
+    
+    /* Declare shorthands */
+    
+    /* Declare local copies of grid functions */
+    CCTK_REAL rhoL = INITVALUE;
+    CCTK_REAL uL = INITVALUE;
+    CCTK_REAL v1L = INITVALUE, v2L = INITVALUE, v3L = INITVALUE;
+    /* Declare precomputed derivatives*/
+    
+    /* Declare derivatives */
+    
+    /* Assign local copies of grid functions */
+    
+    /* Assign local copies of subblock grid functions */
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives (new style) */
+    
+    /* Precompute derivatives (old style) */
+    
+    /* Calculate temporaries and grid functions */
+    uL  =  0;
+    
+    v1L  =  0;
+    
+    v2L  =  0;
+    
+    v3L  =  0;
+    
+    rhoL  =  0;
+    
+    
+    /* Copy local copies back to grid functions */
+    rho[index] = rhoL;
+    u[index] = uL;
+    v1[index] = v1L;
+    v2[index] = v2L;
+    v3[index] = v3L;
+    
+    /* Copy local copies back to subblock grid functions */
+  }
+  LC_ENDLOOP3 (WTFO_Gaussian);
+}
+
+void WTFO_Gaussian(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverEverything(cctkGH, &WTFO_Gaussian_Body);
+}
diff --git a/ML_WaveToyFO/src/WTFO_RHS.c b/ML_WaveToyFO/src/WTFO_RHS.c
new file mode 100644
index 0000000..3813c63
--- /dev/null
+++ b/ML_WaveToyFO/src/WTFO_RHS.c
@@ -0,0 +1,163 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE  (42)
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+#define QAD(x) ((x) * (x) * (x) * (x))
+
+void WTFO_RHS_Body(cGH const * const cctkGH, CCTK_INT const dir, CCTK_INT const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], CCTK_INT const min[3], CCTK_INT const max[3], CCTK_INT const n_subblock_gfs, CCTK_REAL * const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare finite differencing variables */
+  CCTK_REAL dx = INITVALUE, dy = INITVALUE, dz = INITVALUE;
+  CCTK_REAL dxi = INITVALUE, dyi = INITVALUE, dzi = INITVALUE;
+  CCTK_REAL khalf = INITVALUE, kthird = INITVALUE, ktwothird = INITVALUE, kfourthird = INITVALUE, keightthird = INITVALUE;
+  CCTK_REAL hdxi = INITVALUE, hdyi = INITVALUE, hdzi = INITVALUE;
+  
+  
+  /* Declare predefined quantities */
+  CCTK_REAL p1o12dx = INITVALUE;
+  CCTK_REAL p1o12dy = INITVALUE;
+  CCTK_REAL p1o12dz = INITVALUE;
+  CCTK_REAL p1o144dxdy = INITVALUE;
+  CCTK_REAL p1o144dxdz = INITVALUE;
+  CCTK_REAL p1o144dydz = INITVALUE;
+  CCTK_REAL pm1o12dx2 = INITVALUE;
+  CCTK_REAL pm1o12dy2 = INITVALUE;
+  CCTK_REAL pm1o12dz2 = INITVALUE;
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WTFO_RHS_Body");
+  }
+  
+  if (cctk_iteration % WTFO_RHS_calc_every != WTFO_RHS_calc_offset)
+  {
+    return;
+  }
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  dx = CCTK_DELTA_SPACE(0);
+  dy = CCTK_DELTA_SPACE(1);
+  dz = CCTK_DELTA_SPACE(2);
+  dxi = 1.0 / dx;
+  dyi = 1.0 / dy;
+  dzi = 1.0 / dz;
+  khalf = 0.5;
+  kthird = 1/3.0;
+  ktwothird = 2.0/3.0;
+  kfourthird = 4.0/3.0;
+  keightthird = 8.0/3.0;
+  hdxi = 0.5 * dxi;
+  hdyi = 0.5 * dyi;
+  hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  p1o12dx = INV(dx)/12.;
+  p1o12dy = INV(dy)/12.;
+  p1o12dz = INV(dz)/12.;
+  p1o144dxdy = (INV(dx)*INV(dy))/144.;
+  p1o144dxdz = (INV(dx)*INV(dz))/144.;
+  p1o144dydz = (INV(dy)*INV(dz))/144.;
+  pm1o12dx2 = -pow(dx,-2)/12.;
+  pm1o12dy2 = -pow(dy,-2)/12.;
+  pm1o12dz2 = -pow(dz,-2)/12.;
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  LC_LOOP3 (WTFO_RHS,
+            i,j,k, min[0],min[1],min[2], max[0],max[1],max[2],
+            cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    int index = INITVALUE;
+    int subblock_index = INITVALUE;
+    index = CCTK_GFINDEX3D(cctkGH,i,j,k);
+    subblock_index = i - min[0] + (max[0] - min[0]) * (j - min[1] + (max[1]-min[1]) * (k - min[2]));
+    
+    /* Declare shorthands */
+    
+    /* Declare local copies of grid functions */
+    CCTK_REAL rhoL = INITVALUE, rhorhsL = INITVALUE;
+    CCTK_REAL urhsL = INITVALUE;
+    CCTK_REAL v1L = INITVALUE, v1rhsL = INITVALUE, v2L = INITVALUE, v2rhsL = INITVALUE, v3L = INITVALUE, v3rhsL = INITVALUE;
+    /* Declare precomputed derivatives*/
+    
+    /* Declare derivatives */
+    CCTK_REAL PDstandardNth1rho = INITVALUE;
+    CCTK_REAL PDstandardNth2rho = INITVALUE;
+    CCTK_REAL PDstandardNth3rho = INITVALUE;
+    CCTK_REAL PDstandardNth1v1 = INITVALUE;
+    CCTK_REAL PDstandardNth2v2 = INITVALUE;
+    CCTK_REAL PDstandardNth3v3 = INITVALUE;
+    
+    /* Assign local copies of grid functions */
+    rhoL = rho[index];
+    v1L = v1[index];
+    v2L = v2[index];
+    v3L = v3[index];
+    
+    /* Assign local copies of subblock grid functions */
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives (new style) */
+    PDstandardNth1rho = PDstandardNth1(rho, i, j, k);
+    PDstandardNth2rho = PDstandardNth2(rho, i, j, k);
+    PDstandardNth3rho = PDstandardNth3(rho, i, j, k);
+    PDstandardNth1v1 = PDstandardNth1(v1, i, j, k);
+    PDstandardNth2v2 = PDstandardNth2(v2, i, j, k);
+    PDstandardNth3v3 = PDstandardNth3(v3, i, j, k);
+    
+    /* Precompute derivatives (old style) */
+    
+    /* Calculate temporaries and grid functions */
+    urhsL  =  rhoL;
+    
+    rhorhsL  =  PDstandardNth1v1 + PDstandardNth2v2 + PDstandardNth3v3;
+    
+    v1rhsL  =  PDstandardNth1rho;
+    
+    v2rhsL  =  PDstandardNth2rho;
+    
+    v3rhsL  =  PDstandardNth3rho;
+    
+    
+    /* Copy local copies back to grid functions */
+    rhorhs[index] = rhorhsL;
+    urhs[index] = urhsL;
+    v1rhs[index] = v1rhsL;
+    v2rhs[index] = v2rhsL;
+    v3rhs[index] = v3rhsL;
+    
+    /* Copy local copies back to subblock grid functions */
+  }
+  LC_ENDLOOP3 (WTFO_RHS);
+}
+
+void WTFO_RHS(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverInterior(cctkGH, &WTFO_RHS_Body);
+}
diff --git a/ML_WaveToyFO/src/WTFO_constraints.c b/ML_WaveToyFO/src/WTFO_constraints.c
new file mode 100644
index 0000000..0d2cb6b
--- /dev/null
+++ b/ML_WaveToyFO/src/WTFO_constraints.c
@@ -0,0 +1,155 @@
+/*  File produced by Kranc */
+
+#define KRANC_C
+
+#include <assert.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "cctk.h"
+#include "cctk_Arguments.h"
+#include "cctk_Parameters.h"
+#include "GenericFD.h"
+#include "Differencing.h"
+#include "loopcontrol.h"
+
+/* Define macros used in calculations */
+#define INITVALUE  (42)
+#define INV(x) ((1.0) / (x))
+#define SQR(x) ((x) * (x))
+#define CUB(x) ((x) * (x) * (x))
+#define QAD(x) ((x) * (x) * (x) * (x))
+
+void WTFO_constraints_Body(cGH const * const cctkGH, CCTK_INT const dir, CCTK_INT const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], CCTK_INT const min[3], CCTK_INT const max[3], CCTK_INT const n_subblock_gfs, CCTK_REAL * const subblock_gfs[])
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  
+  /* Declare finite differencing variables */
+  CCTK_REAL dx = INITVALUE, dy = INITVALUE, dz = INITVALUE;
+  CCTK_REAL dxi = INITVALUE, dyi = INITVALUE, dzi = INITVALUE;
+  CCTK_REAL khalf = INITVALUE, kthird = INITVALUE, ktwothird = INITVALUE, kfourthird = INITVALUE, keightthird = INITVALUE;
+  CCTK_REAL hdxi = INITVALUE, hdyi = INITVALUE, hdzi = INITVALUE;
+  
+  
+  /* Declare predefined quantities */
+  CCTK_REAL p1o12dx = INITVALUE;
+  CCTK_REAL p1o12dy = INITVALUE;
+  CCTK_REAL p1o12dz = INITVALUE;
+  CCTK_REAL p1o144dxdy = INITVALUE;
+  CCTK_REAL p1o144dxdz = INITVALUE;
+  CCTK_REAL p1o144dydz = INITVALUE;
+  CCTK_REAL pm1o12dx2 = INITVALUE;
+  CCTK_REAL pm1o12dy2 = INITVALUE;
+  CCTK_REAL pm1o12dz2 = INITVALUE;
+  
+  if (verbose > 1)
+  {
+    CCTK_VInfo(CCTK_THORNSTRING,"Entering WTFO_constraints_Body");
+  }
+  
+  if (cctk_iteration % WTFO_constraints_calc_every != WTFO_constraints_calc_offset)
+  {
+    return;
+  }
+  
+  /* Include user-supplied include files */
+  
+  /* Initialise finite differencing variables */
+  dx = CCTK_DELTA_SPACE(0);
+  dy = CCTK_DELTA_SPACE(1);
+  dz = CCTK_DELTA_SPACE(2);
+  dxi = 1.0 / dx;
+  dyi = 1.0 / dy;
+  dzi = 1.0 / dz;
+  khalf = 0.5;
+  kthird = 1/3.0;
+  ktwothird = 2.0/3.0;
+  kfourthird = 4.0/3.0;
+  keightthird = 8.0/3.0;
+  hdxi = 0.5 * dxi;
+  hdyi = 0.5 * dyi;
+  hdzi = 0.5 * dzi;
+  
+  /* Initialize predefined quantities */
+  p1o12dx = INV(dx)/12.;
+  p1o12dy = INV(dy)/12.;
+  p1o12dz = INV(dz)/12.;
+  p1o144dxdy = (INV(dx)*INV(dy))/144.;
+  p1o144dxdz = (INV(dx)*INV(dz))/144.;
+  p1o144dydz = (INV(dy)*INV(dz))/144.;
+  pm1o12dx2 = -pow(dx,-2)/12.;
+  pm1o12dy2 = -pow(dy,-2)/12.;
+  pm1o12dz2 = -pow(dz,-2)/12.;
+  
+  /* Loop over the grid points */
+  #pragma omp parallel
+  LC_LOOP3 (WTFO_constraints,
+            i,j,k, min[0],min[1],min[2], max[0],max[1],max[2],
+            cctk_lsh[0],cctk_lsh[1],cctk_lsh[2])
+  {
+    int index = INITVALUE;
+    int subblock_index = INITVALUE;
+    index = CCTK_GFINDEX3D(cctkGH,i,j,k);
+    subblock_index = i - min[0] + (max[0] - min[0]) * (j - min[1] + (max[1]-min[1]) * (k - min[2]));
+    
+    /* Declare shorthands */
+    
+    /* Declare local copies of grid functions */
+    CCTK_REAL v1L = INITVALUE, v2L = INITVALUE, v3L = INITVALUE;
+    CCTK_REAL w1L = INITVALUE, w2L = INITVALUE, w3L = INITVALUE;
+    /* Declare precomputed derivatives*/
+    
+    /* Declare derivatives */
+    CCTK_REAL PDstandardNth2v1 = INITVALUE;
+    CCTK_REAL PDstandardNth3v1 = INITVALUE;
+    CCTK_REAL PDstandardNth1v2 = INITVALUE;
+    CCTK_REAL PDstandardNth3v2 = INITVALUE;
+    CCTK_REAL PDstandardNth1v3 = INITVALUE;
+    CCTK_REAL PDstandardNth2v3 = INITVALUE;
+    
+    /* Assign local copies of grid functions */
+    v1L = v1[index];
+    v2L = v2[index];
+    v3L = v3[index];
+    
+    /* Assign local copies of subblock grid functions */
+    
+    /* Include user supplied include files */
+    
+    /* Precompute derivatives (new style) */
+    PDstandardNth2v1 = PDstandardNth2(v1, i, j, k);
+    PDstandardNth3v1 = PDstandardNth3(v1, i, j, k);
+    PDstandardNth1v2 = PDstandardNth1(v2, i, j, k);
+    PDstandardNth3v2 = PDstandardNth3(v2, i, j, k);
+    PDstandardNth1v3 = PDstandardNth1(v3, i, j, k);
+    PDstandardNth2v3 = PDstandardNth2(v3, i, j, k);
+    
+    /* Precompute derivatives (old style) */
+    
+    /* Calculate temporaries and grid functions */
+    w1L  =  -PDstandardNth2v3 + PDstandardNth3v2;
+    
+    w2L  =  PDstandardNth1v3 - PDstandardNth3v1;
+    
+    w3L  =  -PDstandardNth1v2 + PDstandardNth2v1;
+    
+    
+    /* Copy local copies back to grid functions */
+    w1[index] = w1L;
+    w2[index] = w2L;
+    w3[index] = w3L;
+    
+    /* Copy local copies back to subblock grid functions */
+  }
+  LC_ENDLOOP3 (WTFO_constraints);
+}
+
+void WTFO_constraints(CCTK_ARGUMENTS)
+{
+  DECLARE_CCTK_ARGUMENTS;
+  DECLARE_CCTK_PARAMETERS;
+  
+  GenericFD_LoopOverInterior(cctkGH, &WTFO_constraints_Body);
+}
diff --git a/ML_WaveToyFO/src/make.code.defn b/ML_WaveToyFO/src/make.code.defn
new file mode 100644
index 0000000..a18c783
--- /dev/null
+++ b/ML_WaveToyFO/src/make.code.defn
@@ -0,0 +1,3 @@
+# File produced by Kranc
+
+SRCS = Startup.c RegisterMoL.c RegisterSymmetries.c WTFO_Gaussian.c WTFO_RHS.c WTFO_constraints.c Boundaries.c