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diff --git a/COPYRIGHT b/COPYRIGHT
new file mode 100644
index 0000000..45b8425
--- /dev/null
+++ b/COPYRIGHT
@@ -0,0 +1,377 @@
+                     ********************************
+                        Welcome to the Cactus Code
+                               Version 4.0
+                     ********************************
+
+All Cactus source code is (c) Copyright by the Authors listed in the
+respective README and source files that you will find scattered thru
+the directory structure of all the thorns. This is a truly
+collaborative development project that benefits from input of many
+people worldwide and we try our best to give credit to every
+contribution. The cactus code web page at
+                    http://www.cactuscode.org 
+contains an extensive list of authors to all the thorns that are
+part of the Cactus Code project. 
+
+The flesh of the Cactus Code and the design of the project is (c)
+Copyright 1997-99 by Gabrielle Allen, Tom Goodale, Joan Masso and Paul
+Walker from the Numerical Relativity group of the Max-Planck-Institut
+fuer Gravitationphysik / Albert Einstein Institute
+(http://www.aei-potsdam.mpg.de).
+
+The Cactus Code is distributed under the GNU general public license
+version 2 which is available below. All thorns distributed with Cactus
+follow this license unless it is explicitly stated otherwise in the
+corresponding README files.
+
+Please, take a look at the documentation in the main doc directory or
+check the cactus web page for instructions on how to run the code,
+report bugs, give feedback, etc. 
+
+Thanks for using cactus. We hope you find it useful. Love it or hate
+it, please let us know what you think.
+- The Cactus Team <cactus@cactuscode.org>
+
+**************************************************************************
+
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                          675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
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+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
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+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
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+Activities other than copying, distribution and modification are not
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+You may charge a fee for the physical act of transferring a copy, and
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+  2. You may modify your copy or copies of the Program or any portion
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+These requirements apply to the modified work as a whole.  If
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+  3. You may copy and distribute the Program (or a work based on it,
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+
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+  6. Each time you redistribute the Program (or any work based on the
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+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
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+If any portion of this section is held invalid or unenforceable under
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+It is not the purpose of this section to induce you to infringe any
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+This section is intended to make thoroughly clear what is believed to
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+
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+  9. The Free Software Foundation may publish revised and/or new versions
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+address new problems or concerns.
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+Each version is given a distinguishing version number.  If the Program
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+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
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+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
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+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
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+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	Appendix: How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
+
+
diff --git a/README b/README
new file mode 100644
index 0000000..3ec9d6d
--- /dev/null
+++ b/README
@@ -0,0 +1,23 @@
+Cactus Code Thorn IOScalar
+Authors    : Gabrielle Allen
+CVS info   : $Header$
+--------------------------------------------------------------------------
+
+1. Purpose of the thorn
+
+This thorn outputs grid variables as scalars as a function on time
+
+Scalars:
+Output straight forwardly
+
+Grid functions:
+Output the minimum, maximum, L1, and L2 norm versus time.
+
+Ouput files can be processed with either gnuplot or xgraph.
+
+The IO method "IOScalar" is registered which can be called 
+by other thorns via CCTK_OutputVarAsByMethod() to output a 
+variable without specifying it in the parameter file.
+
+
+2. Additional information
diff --git a/interface.ccl b/interface.ccl
new file mode 100644
index 0000000..4359316
--- /dev/null
+++ b/interface.ccl
@@ -0,0 +1,6 @@
+# Interface definition for thorn IOBasic
+# $Header$
+
+implements: IOBasic
+inherits: IO
+
diff --git a/param.ccl b/param.ccl
new file mode 100644
index 0000000..9610395
--- /dev/null
+++ b/param.ccl
@@ -0,0 +1,84 @@
+# Parameter definitions for thorn IOBasic
+# $Header$
+
+
+#############################################################################
+### declare IOBasic parameters
+#############################################################################
+private:
+
+##########################
+# Directory to output to  (overriden by outdir)
+##########################
+
+STRING outdirScalar "Name of IO Scalar output directory, overrides outdir"
+{
+  .* :: A regex which matches everything
+} "outdir"
+
+##########################
+# What variables to output
+##########################
+STRING outInfo_vars "Variables to output as Info to screen"
+{
+  .* :: A regex which matches everything
+} ""
+STRING outScalar_vars "Variables to output as Info to screen"
+{
+  .* :: A regex which matches everything
+} ""
+
+
+########################
+# How often to do output
+########################
+INT outInfo_every "How often to do Info output"
+{
+  -1:* ::
+} -1
+INT outScalar_every "How often to do Info output"
+{
+  -1:* ::
+} -1
+
+
+#################
+# 1D output style
+#################
+KEYWORD outScalar_style "Which style for Scalar output"
+{
+  "gnuplot" :: "1D output readable by gnuplot"
+  "xgraph"  :: "1D output readable by xgraph"
+} "xgraph"
+
+
+#############################################################################
+### import IOUtil parameters
+#############################################################################
+shares: IO
+
+####################
+# Output directories
+####################
+USES STRING outdir "Name of IO output directory"
+{
+} "."
+
+
+########################
+# How often to do output
+########################
+USES INT out_every "How often to do IO output"
+{
+  -1: ::
+} 
+
+
+################
+# various things
+################
+USES BOOLEAN verbose ""
+{
+} ""
+
+
diff --git a/schedule.ccl b/schedule.ccl
new file mode 100644
index 0000000..3f6537b
--- /dev/null
+++ b/schedule.ccl
@@ -0,0 +1,10 @@
+# Schedule definitions for thorn IOBasic
+# $Header$
+
+########################################################################
+### register IOBasic routines
+########################################################################
+schedule IOBasic_Startup at STARTUP
+{
+  LANG:C
+} "Startup routine"
diff --git a/src/GHExtension.c b/src/GHExtension.c
new file mode 100644
index 0000000..9e754e1
--- /dev/null
+++ b/src/GHExtension.c
@@ -0,0 +1,101 @@
+ /*@@
+   @file      GHExtension.c
+   @date      Friday 18th September
+   @author    Gabrielle Allen
+   @desc 
+   IO GH extension stuff.
+   @enddesc 
+ @@*/
+
+/* #define DEBUG_IO */
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "config.h"
+#include "cctk_Flesh.h"
+#include "cctk_Comm.h"
+#include "cctk_Groups.h"
+#include "cctk_Misc.h"
+#include "cctk_GHExtensions.h"
+#include "cctk_parameters.h"
+#include "CactusBase/IOUtil/src/ioGH.h"
+#include "iobasicGH.h"
+
+
+void *IOBasic_SetupGH (tFleshConfig *config, int convergence_level, cGH *GH)
+{
+  int i;
+  iobasicGH *newGH;
+
+  newGH = (iobasicGH *) malloc (sizeof (iobasicGH));
+  newGH->infovals = (CCTK_REAL **) malloc (CCTK_NumVars ()  * sizeof (CCTK_REAL *));
+  for (i=0;i<CCTK_NumVars ();i++) 
+    newGH->infovals[i] = (CCTK_REAL *) malloc (2  * sizeof (CCTK_REAL));
+
+  newGH->Scalarnum = (int *) malloc (CCTK_NumVars () * sizeof (int));
+  newGH->Scalarlast = (int *) malloc (CCTK_NumVars () * sizeof (int));
+
+  newGH->infonum = (int *) malloc (CCTK_NumVars () * sizeof (int));
+  newGH->infolast = (int *) malloc (CCTK_NumVars () * sizeof (int));
+
+  return newGH;
+}
+
+int IOBasic_InitGH (cGH *GH)
+{
+  DECLARE_CCTK_PARAMETERS
+  int i;
+  iobasicGH *myGH; 
+
+  /* get the handles for IOBasic extensions */
+  myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];
+  myGH->filenameListScalar = NULL;
+
+  /* How often to output */
+  myGH->infoevery  = out_every;
+  if (outInfo_every > 0)
+    myGH->infoevery = outInfo_every;
+
+  myGH->Scalarevery = out_every;
+  if (outScalar_every > 0)
+    myGH->Scalarevery = outScalar_every;
+
+  InitIONum(myGH->infonum,outInfo_vars);
+  InitIONum(myGH->Scalarnum,outScalar_vars); 
+
+  /* Deal with the output directories */
+  myGH->outpfx_Scalar = outdir;
+  if (!CCTK_Equals(outdirScalar,"outdir"))
+    myGH->outpfx_Scalar = outdirScalar;
+
+  /* Create the output directories */
+  if (myGH->Scalarevery > 0) {
+    if (CCTK_MyProc (GH) == 0) {
+      CCTK_mkdir(myGH->outpfx_Scalar);
+    }
+  }
+
+  for (i=0; i<CCTK_NumVars(); i++)
+    myGH->Scalarlast[i] = -1;
+  for (i=0; i<CCTK_NumVars(); i++)
+    myGH->infolast [i] = -1;
+
+  for (i=0; i<CCTK_NumVars(); i++)
+  {
+    myGH->infovals[i][0] = 0.0;
+    myGH->infovals[i][1] = 0.0;
+  }
+
+  myGH->filenameListScalar = NULL;
+
+  return 0;
+}
+
+int IOBasic_rfrTraverseGH(cGH *GH, int rfrpoint)
+{
+  return 0;
+}
+
+
diff --git a/src/Output.c b/src/Output.c
new file mode 100644
index 0000000..dd757e7
--- /dev/null
+++ b/src/Output.c
@@ -0,0 +1,238 @@
+ /*@@
+   @file      Output.c
+   @date      Mon 21 September
+   @author    Gabrielle Allen
+   @desc 
+   Functions to deal with scalar output of grid variables
+   @enddesc 
+ @@*/
+ 
+/*#define IO_DEBUG*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "cctk_Flesh.h"
+#include "cctk_Groups.h"
+#include "cctk_Comm.h"
+#include "cctk_GHExtensions.h"
+#include "cctk_WarnLevel.h"
+#include "cctk_Misc.h"
+#include "cctk_parameters.h"
+#include "CactusBase/IOUtil/src/ioGH.h"
+#include "iobasicGH.h"
+
+
+int IOBasic_OutputGH (cGH *GH)
+{
+  DECLARE_CCTK_PARAMETERS
+  int i;
+  int grouptype;
+  char *name=NULL;
+  iobasicGH *myGH;
+
+  /* Get the GH extensions for IOBasic */
+  myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];
+
+  /* Return if no output is required */
+  if (myGH->Scalarevery < 0)
+    return 0;
+
+  /* Loop over all variables */
+  for (i = 0; i < CCTK_NumVars (); i++) {
+
+    grouptype = CCTK_GroupTypeFromVarI (i);
+
+    /* Check this GF should be output */
+    if ((grouptype == GROUP_GF||grouptype == GROUP_SCALAR) 
+	&& myGH->Scalarnum [i] != 0 
+        && (GH->cctk_iteration % myGH->Scalarevery == 0)) {
+
+      /* Check GF not already output this iteration */
+      if (myGH->Scalarlast [i] == GH->cctk_iteration) {
+        char *msg, *varname;
+
+        varname = CCTK_VarName (i);
+        msg = (char *) malloc (200 * sizeof (char) + strlen (varname));
+        sprintf (msg, "Already done Scalar output for '%s' on this timestep",
+                 varname);
+        CCTK_WARN (2, msg);
+        free (msg);
+      }
+      /* Check GF has storage */
+      else if (grouptype == GROUP_GF && 
+	       ! CCTK_QueryGroupStorageI (GH, CCTK_GroupIndexFromVarI (i)))
+      {
+        char *msg, *varname;
+
+        varname = CCTK_VarName(i);
+        msg = (char *) malloc (200 * sizeof (char) + strlen (varname));
+        sprintf (msg, "No 0D output in IOBasic_OutputGH for '%s' "
+                 "(no storage)", varname);
+        CCTK_WARN (2, msg);
+        free (msg);
+      } 
+      else 
+      {
+
+        /* Get the variable name for this index (for filename) */
+        name = CCTK_VarName(i);
+
+#ifdef IO_DEBUG
+  printf("\nIn IOBasic_OutputGH\n----------------\n");
+  printf("  Index = %d\n",i);
+  printf("  Variable = -%s-\n",name);
+  printf("  Last output iteration was = %d\n",myGH->Scalarlast[i]);
+  printf("  Output iteration number = %d\n",myGH->Scalarnum[i]);
+#endif
+  
+        /* Make the IO call */
+        if (grouptype == GROUP_SCALAR)
+	{
+	  IOBasic_Write (GH, i, name);
+        }
+	else
+	{
+	  IOBasic_WriteGF (GH, i, name);
+	}
+
+        /* Register another 0D output for this GF */
+        myGH->Scalarnum [i]++;
+        
+        /* Register GF as having 0D output this iteration */
+        myGH->Scalarlast [i] = GH->cctk_iteration;
+      }
+    }
+  }
+
+  return 0;
+}
+
+
+int IOBasic_OutputVarAs (cGH *GH, const char *fullname, const char *alias)
+{
+  int index;
+  int grouptype;
+  index = CCTK_VarIndex (fullname);
+
+#ifdef IO_DEBUG
+  printf("\nIn IOBasic_OutputVarAs\n-------------------\n");
+  printf("  Fullname = -%s-\n",fullname);
+  printf("  Alias = -%s-\n",alias);
+  printf("  Index = %d\n",index);
+#endif
+
+  grouptype = CCTK_GroupTypeFromVarI (index);
+
+  if (grouptype == GROUP_SCALAR)
+  {
+    IOBasic_Write (GH, index, alias);
+  }
+  else
+  {
+    IOBasic_WriteGF (GH, index, alias);
+  }
+    
+  return 0;
+}
+
+
+ /*@@
+   @routine    IOBasic_TimeForOutput
+   @date       Sat March 6 1999
+   @author     Gabrielle Allen
+   @desc 
+   Decides if it is time to output a variable using Scalar output
+   method
+   @enddesc 
+   @calls    CCTK_GHExtensionHandle 
+             CCTK_GroupTypeFromVar
+             CCTK_WARN
+             CCTK_QueryGroupStorage
+             CCTK_GroupFromVar               
+   @calledby   
+   @history 
+ 
+   @endhistory 
+   @var     GH
+   @vdesc   Pointer to CCTK GH
+   @vtype   cGH
+   @vio     in
+   @vcomment 
+   @endvar 
+   @var     var
+   @vdesc   index of variable
+   @vtype   int
+   @vio     in
+   @vcomment 
+   @endvar 
+@@*/
+                  
+int IOBasic_TimeForOutput (cGH *GH, int var)
+{
+  int return_type;
+  int grouptype;
+  iobasicGH *myGH;
+
+  /* Default is do not do output */
+  return_type = 0;
+
+  /* Get the GH extension for IOBasic */
+  myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];
+
+  grouptype = CCTK_GroupTypeFromVarI (var);
+  
+  /* Check this GF should be output */
+  if ((grouptype == GROUP_GF || grouptype == GROUP_SCALAR)
+      && myGH->Scalarnum [var] != 0 
+      && (GH->cctk_iteration % myGH->Scalarevery == 0)) {
+      
+    /* Check GF not already output this iteration */
+    if (myGH->Scalarlast [var] == GH->cctk_iteration)
+      CCTK_WARN (2, "Already done Scalar output in IO");
+    else
+      return_type = 1;
+  }
+
+  return return_type;
+}
+
+int IOBasic_TriggerOutput (cGH *GH, int variable)
+{
+  char *var;
+  int grouptype;
+  iobasicGH *myGH;
+
+  /* Get the GH extension for IOBasic */
+  myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];
+  
+  var = CCTK_VarName (variable);
+
+#ifdef IO_DEBUG
+  printf("\nIn IOBasic_TriggerOutput\n---------------------\n");
+  printf("  Index = %d\n",variable);
+  printf("  Variable = -%s-\n",var);
+#endif
+  
+  /* Do the Scalar output */
+
+  grouptype = CCTK_GroupTypeFromVarI (variable);
+
+  if (grouptype == GROUP_SCALAR)
+  {
+    IOBasic_Write (GH, variable, var);
+  }
+  else
+  {
+    IOBasic_WriteGF (GH, variable, var);
+  }
+  
+  /* Register another Scalar output for this GF */
+  myGH->Scalarnum [variable]++;
+    
+  /* Register variable as having Scalar output this iteration */
+  myGH->Scalarlast [variable] = GH->cctk_iteration;
+  
+  return 0;
+}
diff --git a/src/OutputInfo.c b/src/OutputInfo.c
new file mode 100644
index 0000000..220104f
--- /dev/null
+++ b/src/OutputInfo.c
@@ -0,0 +1,226 @@
+ /*@@
+   @file      OutputInfo.c
+   @date      June 31 1999
+   @author    Gabrielle Allen
+   @desc 
+   Functions to deal with Info output of Variables
+   @enddesc 
+ @@*/
+ 
+/*#define IO_DEBUG*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "cctk_Flesh.h"
+#include "cctk_Groups.h"
+#include "cctk_Comm.h"
+#include "cctk_GHExtensions.h"
+#include "cctk_WarnLevel.h"
+#include "cctk_Misc.h"
+#include "cctk_parameters.h"
+#include "iobasicGH.h"
+
+CCTK_REAL IOBasic_WriteInfo (cGH *GH, int index, const char *operator, const char *alias);
+
+static int first = 1;
+
+int IOBasic_OutputInfoGH (cGH *GH)
+{
+  DECLARE_CCTK_PARAMETERS
+  int i;
+  int grouptype;
+  char *name=NULL;
+  iobasicGH *myGH;
+
+  /* Get the GH extensions for IOBasic */
+  myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];
+
+  /* Return if no output is required (should use do_1dio parameter) */
+  if (myGH->infoevery < 1 || 
+      GH->cctk_iteration % myGH->infoevery != 0)
+    return 0;
+
+  /* Print a header the first time through */
+  if (first == 1)
+  {  
+    char l1[1024],l2[1024],l3[1024];
+    
+    sprintf (l1," it  |       |");
+    sprintf (l2,"     |   t   |");
+    sprintf (l3,"--------------");
+      
+    for (i = 0; i < CCTK_NumVars (); i++) 
+    {
+      char ll[80];
+      if(myGH->infonum[i] != 0)
+      {
+	sprintf (ll,"                                        ");
+	ll[25-strlen(CCTK_VarName(i))] = '\0';
+	sprintf (l1,"%s %s%s |",l1,CCTK_VarName(i),ll);
+	sprintf (l2,"%s Min          Max          |",l2);
+	sprintf (l3,"%s----------------------------",l3);
+      }
+    }
+    printf ("%s\n%s\n%s\n%s\n",l3,l1,l2,l3);
+    fflush(stdout);
+    first = 0;
+  }
+  
+  /* Print the timestep information for all variables */
+  printf("%4d |%7.3f|",GH->cctk_iteration,GH->cctk_time);
+
+
+  /* Loop over all variables */
+  for (i = 0; i < CCTK_NumVars (); i++) {
+
+    grouptype = CCTK_GroupTypeFromVarI (i);
+
+    /* Check this Variable should be output */
+    if (myGH->infonum [i] != 0) {
+
+      /* Check variable not already output this iteration */
+      if (myGH->infolast [i] == GH->cctk_iteration) {
+
+	printf("%12.8f |%12.8f |",myGH->infovals[i][0],myGH->infovals[i][1]);
+
+      }
+      /* Check GF has storage */
+      else if (grouptype == GROUP_GF && ! CCTK_QueryGroupStorageI (GH,
+               CCTK_GroupIndexFromVarI (i))){
+        char *msg, *varname;
+
+        varname = CCTK_VarName(i);
+        msg = (char *) malloc (200 * sizeof (char) + strlen (varname));
+        sprintf (msg, "No info output in IOBasic_OutputInfoGH for '%s' "
+                 "(no storage)", varname);
+        CCTK_WARN (2, msg);
+        free (msg);
+      } else {
+
+        /* Get the variable name for this index (for filename) */
+        name = CCTK_VarName(i);
+
+#ifdef IO_DEBUG
+  printf("\nIn IO OutputInfoGH\n----------------\n");
+  printf("  Index = %d\n",i);
+  printf("  Variable = -%s-\n",name);
+  printf("  Last output iteration was = %d\n",myGH->infolast[i]);
+  printf("  Output iteration number = %d\n",myGH->infonum[i]);
+#endif
+  
+        /* Make the IO call */
+        myGH->infovals[i][0]=IOBasic_WriteInfo (GH, i, "minimum", name);
+        myGH->infovals[i][1]=IOBasic_WriteInfo (GH, i, "maximum", name);
+        
+	printf("%12.8f |%12.8f |",myGH->infovals[i][0],myGH->infovals[i][1]);
+
+        /* Register another info output for this variable */
+        myGH->infonum [i]++;
+        
+        /* Register GF as having info output this iteration */
+        myGH->infolast [i] = GH->cctk_iteration;
+      }
+    }
+  }
+
+  /* Add the new line */
+  if (CCTK_MyProc(GH) == 0)
+    printf("\n");
+
+  return 0;
+}
+
+
+ /*@@
+   @routine    IOBasic_TimeForInfo
+   @date       June 31 1999
+   @author     Gabrielle Allen
+   @desc 
+   Decides if it is time to output a variable using info output
+   method
+   @enddesc 
+   @calls    CCTK_GHExtensionHandle 
+             CCTK_GroupTypeFromVarI
+             CCTK_WARN
+             CCTK_QueryGroupStorageI 
+             CCTK_GroupFromVar               
+   @calledby   
+   @history 
+ 
+   @endhistory 
+   @var     GH
+   @vdesc   Pointer to CCTK GH
+   @vtype   cGH
+   @vio     in
+   @vcomment 
+   @endvar 
+   @var     var
+   @vdesc   index of variable
+   @vtype   int
+   @vio     in
+   @vcomment 
+   @endvar 
+@@*/
+                  
+int IOBasic_TimeForInfo (cGH *GH, int var)
+{
+  int return_type;
+  int grouptype;
+  iobasicGH *myGH;
+
+  /* Default is do not do output */
+  return_type = 0;
+
+  /* Get the GH extensions for IOBasic */
+  myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];
+
+  grouptype = CCTK_GroupTypeFromVarI (var);
+  
+  /* Check this GF should be output */
+  if (myGH->infonum [var] != 0 
+      && (GH->cctk_iteration % myGH->infoevery == 0)) {
+      
+    /* Check GF not already output this iteration */
+    if (myGH->infolast [var] == GH->cctk_iteration)
+      CCTK_WARN (2, "Already done info output in IO");
+    else
+      return_type = 1;
+  }
+
+  return return_type;
+}
+
+int IOBasic_TriggerOutputInfo (cGH *GH, int variable)
+{
+  char *var;
+  iobasicGH *myGH;
+
+
+  /* Get the GH extension for IOBasic */
+  myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];
+  
+  var = CCTK_VarName (variable);
+
+  /* Do the Info output */
+#ifdef IO_DEBUG
+  printf("\nIn IO TriggerOutputInfo\n---------------------\n");
+  printf("  Index = %d\n",variable);
+  printf("  Variable = -%s-\n",var);
+#endif
+  
+  myGH->infovals[variable][0]=IOBasic_WriteInfo (GH, variable, "minimum",var);
+  myGH->infovals[variable][1]=IOBasic_WriteInfo (GH, variable, "maximum",var);
+  
+  /* Register another Info output for this GF */
+  myGH->infonum [variable]++;
+    
+  /* Register GF as having Info output this iteration */
+  myGH->infolast [variable] = GH->cctk_iteration;
+  
+  return 0;
+}
+
+
+
diff --git a/src/Startup.c b/src/Startup.c
new file mode 100644
index 0000000..bf23e32
--- /dev/null
+++ b/src/Startup.c
@@ -0,0 +1,80 @@
+ /*@@
+   @file      Startup.c
+   @date      Friday 18th September 1999
+   @author    Gabrielle Allen
+   @desc 
+   Startup routines for IOBasic.
+   @enddesc 
+ @@*/
+
+
+#include <stdio.h>
+#include <string.h>
+
+#include "cctk_Flesh.h"
+#include "cctk_GHExtensions.h"
+#include "cctk_IOMethods.h"
+#include "cctk_parameters.h"
+
+/* prototypes of functions to be registered */
+int IOBasic_OutputGH (cGH *GH);
+int IOBasic_TriggerOutput (cGH *GH, int);
+int IOBasic_TimeForOutput (cGH *GH, int);
+int IOBasic_OutputVarAs (cGH *GH, const char *var, const char *alias);
+void *IOBasic_SetupGH (tFleshConfig *config, int convergence_level, cGH *GH);
+int IOBasic_InitGH (cGH *GH);
+int IOBasic_rfrTraverseGH (cGH *GH, int rfrpoint);
+
+int IOBasic_OutputInfoGH (cGH *GH);
+int IOBasic_TriggerOutputInfo (cGH *GH, int);
+int IOBasic_TimeForInfo (cGH *GH, int);
+
+
+ /*@@
+   @routine    IOBasic_Startup
+   @date       Friday 18th September 1999
+   @author     Gabrielle Allen
+   @desc 
+   The startup registration routine for Basic IO.
+   Registers the GH extensions needed for IO and
+   the registerable routines used for each method of IO.
+   IO does not overload any functions.
+   @enddesc 
+   @calls     
+   @calledby   
+   @history 
+ 
+   @endhistory 
+
+@@*/
+void IOBasic_Startup (void)
+{
+  DECLARE_CCTK_PARAMETERS
+  int IOMethod;
+  int IO_GHExtension;
+
+  IO_GHExtension = CCTK_RegisterGHExtension ("IOBasic");
+  CCTK_RegisterGHExtensionSetupGH (IO_GHExtension, IOBasic_SetupGH);
+  CCTK_RegisterGHExtensionInitGH (IO_GHExtension, IOBasic_InitGH);
+  CCTK_RegisterGHExtensionrfrTraverseGH (IO_GHExtension, IOBasic_rfrTraverseGH);
+
+  /* Register the IOBasic routines as output methods  */
+  IOMethod = CCTK_RegisterIOMethod ("Scalar");
+  CCTK_RegisterIOMethodOutputGH (IOMethod, IOBasic_OutputGH);
+  CCTK_RegisterIOMethodOutputVarAs (IOMethod, IOBasic_OutputVarAs);
+  CCTK_RegisterIOMethodTimeToOutput (IOMethod, IOBasic_TimeForOutput);
+  CCTK_RegisterIOMethodTriggerOutput (IOMethod, IOBasic_TriggerOutput);
+
+  IOMethod = CCTK_RegisterIOMethod ("Info");
+  CCTK_RegisterIOMethodOutputGH (IOMethod, IOBasic_OutputInfoGH);
+  CCTK_RegisterIOMethodTimeToOutput (IOMethod, IOBasic_TimeForInfo);
+  CCTK_RegisterIOMethodTriggerOutput (IOMethod, IOBasic_TriggerOutputInfo);
+
+}
+
+
+
+
+
+
+
diff --git a/src/Write.c b/src/Write.c
new file mode 100644
index 0000000..d315610
--- /dev/null
+++ b/src/Write.c
@@ -0,0 +1,88 @@
+/*@@
+   @routine    Write.c
+   @date       18th September 1999
+   @author     Gabrielle Allen
+   @desc 
+   Writes scalar grid variable data.
+   @enddesc 
+   @calls    
+   @calledby   
+   @history
+   @hauthor  @hdate 
+   @hdesc 
+   @hendhistory
+@@*/
+
+#include <stdio.h>
+
+#include "cctk.h"
+#include "cctk_parameters.h"
+#include "cctk_Flesh.h"
+#include "cctk_GHExtensions.h"
+#include "cctk_Comm.h"
+#include "cctk_Misc.h"
+#include "cctk_WarnLevel.h"
+#include "iobasicGH.h"
+
+void IOBasic_Write (cGH *GH, int index, const char *alias)
+{
+  DECLARE_CCTK_PARAMETERS
+  int reduce_handle;
+  char *openmode;
+  FILE *file;
+  CCTK_REAL *data_real;
+  CCTK_INT *data_int;
+
+  /* Open the file (we write only on proc0) */
+  if (CCTK_MyProc (GH) == 0) 
+  {
+    char fname[256];
+    int  handle;
+    iobasicGH *myGH;
+
+    myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];
+
+    /* see if output files for this alias name were already created */
+    if (GetNamedData (myGH->filenameListScalar, alias) == NULL) {
+      /* just store a non-NULL pointer in database */
+      StoreNamedData (&myGH->filenameListScalar, alias, (void *) 1);
+      openmode = "w";
+    } else
+      openmode = "a";
+
+    sprintf (fname, "%s/%s.tl", myGH->outpfx_Scalar, alias);
+    file = fopen(fname,openmode);
+    
+    if (*openmode == 'w') {
+      char title_start_char;
+
+      if (CCTK_Equals(outScalar_style,"gnuplot")) 
+        title_start_char = '#';
+      else {
+        if (! CCTK_Equals(outScalar_style,"xgraph"))
+          CCTK_WARN(3,"Don't understand outScalar_style ... using xgraph");
+        title_start_char = 34;
+      }
+
+      fprintf (file,"%c%s v time\n",title_start_char,alias);
+    }
+
+    switch (CCTK_VarTypeI(index)) {
+    case CCTK_VARIABLE_REAL:
+      data_real  = ((CCTK_REAL ***) GH->data) [index][0]; 
+      fprintf(file,"%f %25.13f\n",GH->cctk_time,*data_real);
+      break;
+    case CCTK_VARIABLE_INT:
+      data_int  = ((CCTK_INT ***) GH->data) [index][0]; 
+      fprintf(file,"%f %d\n",GH->cctk_time,*data_int);
+      break;
+    default:
+      CCTK_WARN (3, "Unsupported data type");
+      return;
+    }
+    
+    fclose(file);
+
+  }
+}
+
diff --git a/src/WriteGF.c b/src/WriteGF.c
new file mode 100644
index 0000000..4580947
--- /dev/null
+++ b/src/WriteGF.c
@@ -0,0 +1,121 @@
+/*@@
+   @routine    WriteGF
+   @date       Tue Apr  1 16:45:35 1997
+   @author     Paul Walker
+   @desc 
+   Dumps the "0D" data.
+   @enddesc 
+   @calls    
+   @calledby   
+   @history
+   @hauthor Thomas Radke @hdate 17 Mar 1999
+   @hdesc included "cctk_Comm.h" to overload CCTK_GetMyProc() properly
+   @hendhistory
+@@*/
+
+#include <stdio.h>
+
+#include "cctk.h"
+#include "cctk_Flesh.h"
+#include "cctk_parameters.h"
+#include "cctk_GHExtensions.h"
+#include "cctk_Misc.h"
+#include "cctk_Comm.h"
+#include "cctk_WarnLevel.h"
+#include "cctk_Reduction.h"
+#include "iobasicGH.h"
+
+void IOBasic_WriteGF (cGH *GH, int index, const char *alias)
+{
+  DECLARE_CCTK_PARAMETERS
+  CCTK_REAL tt[1];
+  int i;
+  int reduce_handle;
+  char *openmode;
+  FILE *file[4];
+
+  /* Open the file (we write only on proc0) */
+  if (CCTK_MyProc (GH) == 0) {
+
+    char fname[256];
+    int  handle;
+    iobasicGH *myGH;
+
+    myGH = (iobasicGH *) GH->extensions [CCTK_GHExtensionHandle ("IOBasic")];
+
+    /* see if output files for this alias name were already created */
+    if (GetNamedData (myGH->filenameListScalar, alias) == NULL) {
+      /* just store a non-NULL pointer in database */
+      StoreNamedData (&myGH->filenameListScalar, alias, (void *) 1);
+      openmode = "w";
+    } else
+      openmode = "a";
+
+    sprintf (fname, "%s/%s_max.tl", myGH->outpfx_Scalar, alias);
+    file[0] = fopen(fname,openmode);
+
+    sprintf(fname,"%s/%s_min.tl", myGH->outpfx_Scalar, alias);
+    file[1] = fopen(fname,openmode);
+
+    sprintf(fname,"%s/%s_nm1.tl", myGH->outpfx_Scalar, alias);
+    file[2] = fopen(fname,openmode);
+
+    sprintf(fname,"%s/%s_nm2.tl", myGH->outpfx_Scalar, alias);
+    file[3] = fopen(fname,openmode);
+
+    if (*openmode == 'w') {
+      char title_start_char;
+
+      if (CCTK_Equals(outScalar_style,"gnuplot")) 
+        title_start_char = '#';
+      else {
+        if (! CCTK_Equals(outScalar_style,"xgraph"))
+          CCTK_WARN(3,"Don't understand outScalar_style ... using xgraph");
+        title_start_char = 34;
+      }
+
+      fprintf (file[0],"%c%s max v time\n",title_start_char,alias);
+      fprintf (file[1],"%c%s min v time\n",title_start_char,alias);
+      fprintf (file[2],"%c%s norm1 v time\n",title_start_char,alias);
+      fprintf (file[3],"%c%s norm2 v time\n",title_start_char,alias);
+    }
+
+  }
+
+  reduce_handle = CCTK_ReductionHandle("maximum");
+  if (reduce_handle > -1)
+  {
+    CCTK_Reduce(GH,-1,reduce_handle,1,CCTK_VARIABLE_REAL,tt,1,index);
+    if (CCTK_MyProc(GH) == 0)
+      fprintf(file[0],"%f %25.13f\n",GH->cctk_time,tt[0]);
+  }
+
+  reduce_handle = CCTK_ReductionHandle("minimum");
+  if (reduce_handle > -1)
+  {
+    CCTK_Reduce(GH,-1,reduce_handle,1,CCTK_VARIABLE_REAL,tt,1,index);
+    if (CCTK_MyProc(GH) == 0)
+      fprintf(file[1],"%f %25.13f\n",GH->cctk_time,tt[0]);
+  }
+
+  reduce_handle = CCTK_ReductionHandle("norm1");
+  if (reduce_handle > -1)
+  {
+    CCTK_Reduce(GH,-1,reduce_handle,1,CCTK_VARIABLE_REAL,tt,1,index);
+    if (CCTK_MyProc(GH) == 0)
+      fprintf(file[2],"%f %25.13f\n",GH->cctk_time,tt[0]);
+  }
+
+  reduce_handle = CCTK_ReductionHandle("norm2");
+  if (reduce_handle > -1)
+  {
+    CCTK_Reduce(GH,-1,reduce_handle,1,CCTK_VARIABLE_REAL,tt,1,index);
+    if (CCTK_MyProc(GH) == 0)
+      fprintf(file[3],"%f %25.13f\n",GH->cctk_time,tt[0]);
+  }
+
+  if (CCTK_MyProc (GH) == 0)
+    for (i=0;i<4;i++)
+      fclose(file[i]);
+}
+
diff --git a/src/WriteInfo.c b/src/WriteInfo.c
new file mode 100644
index 0000000..c49d53f
--- /dev/null
+++ b/src/WriteInfo.c
@@ -0,0 +1,48 @@
+/*@@
+   @routine    WriteInfo
+   @date       June 31 1999
+   @author     Gabrielle Allen, Paul Walker
+   @desc 
+   Dumps the Info data.
+   @enddesc 
+   @calls    
+   @calledby   
+   @history
+   @hauthor Thomas Radke @hdate 17 Mar 1999
+   @hdesc included "cctk_Comm.h" to overload CCTK_MyProc() properly
+   @hendhistory
+@@*/
+
+#include <stdio.h>
+
+#include "cctk.h"
+#include "cctk_Flesh.h"
+#include "cctk_parameters.h"
+#include "cctk_GHExtensions.h"
+#include "cctk_Misc.h"
+#include "cctk_Comm.h"
+#include "cctk_Reduction.h"
+#include "CactusBase/IOUtil/src/ioGH.h"
+
+CCTK_REAL IOBasic_WriteInfo (cGH *GH, int index, const char *operator, const char *alias)
+{
+  DECLARE_CCTK_PARAMETERS
+  CCTK_REAL tt[1];
+  int reduce_handle;
+  CCTK_REAL retval;
+
+  reduce_handle = CCTK_ReductionHandle(operator);
+  if (reduce_handle > -1)
+  {
+    CCTK_Reduce(GH,-1,reduce_handle,1,CCTK_VARIABLE_REAL,tt,1,index);
+    retval = tt[0];
+  }
+
+  return retval;
+
+}
+
+
+
+
+
diff --git a/src/iobasicGH.h b/src/iobasicGH.h
new file mode 100644
index 0000000..a61fdb4
--- /dev/null
+++ b/src/iobasicGH.h
@@ -0,0 +1,42 @@
+ /*@@
+   @header    iobasic.h
+   @date      Friday 18th September 1999
+   @author    Gabrielle Allen
+   @desc 
+   The extensions to the GH structure from IOBasic.
+   @enddesc
+   @version $Header$
+ @@*/
+
+#include "StoreNamedData.h"
+
+
+typedef struct IOBASICGH {
+
+  /* The number of times output */
+  int   *infonum;
+  int   *Scalarnum;
+
+  int  Scalarevery;
+  int  infoevery;
+
+  /* Directory in which to output */
+  char  *outpfx_Scalar;
+
+  /* The last iteration output */
+  int   *infolast;
+  int   *Scalarlast;
+
+  /* The values for info */
+  CCTK_REAL **infovals;
+
+  pNamedData *filenameListScalar;
+
+} iobasicGH;
+
+
+/* function prototypes */
+void IOBasic_Write (cGH *GH, int index, const char *alias);
+void IOBasic_WriteGF (cGH *GH, int index, const char *alias);
+CCTK_REAL IOBasic_WriteInfo (cGH *GH, int index, const char *operator, const char *alias);
+
diff --git a/src/make.code.defn b/src/make.code.defn
new file mode 100644
index 0000000..bf9e62d
--- /dev/null
+++ b/src/make.code.defn
@@ -0,0 +1,15 @@
+# Main make.code.defn file for thorn IOBasic
+# $Header$
+
+# Source files in this directory
+SRCS = Startup.c \
+       GHExtension.c \
+       Output.c \
+       OutputInfo.c \
+       Write.c \
+       WriteGF.c \
+       WriteInfo.c 
+
+# Subdirectories containing source files
+SUBDIRS = 
+