diff --git a/site_ansto/site_ansto.c b/site_ansto/site_ansto.c
index ec04c1b7..8d2715bc 100644
--- a/site_ansto/site_ansto.c
+++ b/site_ansto/site_ansto.c
@@ -23,6 +23,7 @@
 #include <tcl.h>
 #include <site.h>
 #include <SCinter.h>
+#include <splitter.h>
 
 #ifdef SICS_VALGRIND
 #include <valgrind/memcheck.h>
@@ -322,6 +323,33 @@ int testLogCmd(SConnection *pCon, SicsInterp *pInter, void *pData,
   return OKOK;
 }
 
+/**
+ * \brief Writes multiline output from a command to a client.
+ * This is useful for implementing Tcl proc wrappers for commands.
+ * NOTE: SICS-764, currently this sends output to the client as well as capturing it.
+ *       We should try to improve this in Release 3.2 see SICS-765
+ */
+int Ansto_Capture(SConnection *pCon, SicsInterp * pSics, void *pData, int argc, char *argv[]) {
+  char buffer[1024];
+  char *command, *data;
+  int status, inMacro;
+
+  if (argc < 2) {
+    SCWrite(pCon, "ERROR: insufficient arguments to capture", eError);
+    return 0;
+  }
+  command = Arg2Tcl(argc - 1, &argv[1], buffer, sizeof buffer);
+  inMacro = pCon->iMacro;
+  pCon->iMacro = 0;
+  status = InterpExecute(pSics, pCon, command);
+  pCon->iMacro = inMacro;
+  if (command != buffer)
+    free(command);
+  data = ANETgetWBuffer(pCon->sockHandle);
+  SCWrite(pCon, data, eValue);
+  return status;
+}
+
 void SiteInit(void) {
 #define INIT(F) { void F(void); F(); }
 /* insert here initialization routines ... */
@@ -376,6 +404,7 @@ static void AddCommands(SicsInterp *pInter)
   AddCommand(pInter, "sicslist", SicsList, NULL, NULL);
   AddCommand(pInter, "FileEvalGlob", MacroFileEvalGlob, NULL, NULL);
   AddCommand(pInter, "Valgrind", Ansto_Valgrind, NULL, NULL);
+  AddCommand(pInter, "anstocapture", Ansto_Capture, NULL, NULL);
 
   /*
    * Tcl 8.5 has implemented the clock command in tcl rather then C.