diff --git a/xlhtml/support.h b/xlhtml/support.h
new file mode 100644
index 0000000..c4cdef5
--- /dev/null
+++ b/xlhtml/support.h
@@ -0,0 +1,12 @@
+#include "../cole/cole.h"
+
+void display_usage(void);
+void NumToDate(long num, int *year, int *month, int *day);
+U16 getShort(U8 *ptr);
+void getDouble(U8 *ptr, F64 *d);
+int null_string(U8 *str);
+void print_version(void);
+void do_cr(void);
+void FracToTime(U8 *cnum, int *hr, int *minut, int *sec, int *msec);
+S32 getLong(U8 *ptr);
+void RKtoDouble(S32 n, F64 *d);