diff --git a/std-script/box-win/execute.h b/std-script/box-win/execute.h
new file mode 100644
--- /dev/null
+++ b/std-script/box-win/execute.h
@@ -0,0 +1,25 @@
+/*
+  This sandbox module is from [Fossil
+  grader](http://code.google.com/p/fossil-grader/).
+
+  The code is a modification from an unknown source on the internet.
+
+*/
+#ifndef EXECUTE_H_INCLUDED
+#define EXECUTE_H_INCLUDED
+
+#define EXE_RESULT_OK       0
+#define EXE_RESULT_TIMEOUT  1
+#define EXE_RESULT_MEMORY   2
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int execute(char *exname, char *inname, char *outname, double t, int max_mem=0);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif