diff -cb ../../../libhelp-1.8.1/libButtFace/Center.c libButtFace/Center.c
*** ../../../libhelp-1.8.1/libButtFace/Center.c	Fri Feb 24 13:28:28 1995
--- libButtFace/Center.c	Mon Oct 20 19:00:11 1997
***************
*** 31,36 ****
--- 31,37 ----
   */
  #include <X11/IntrinsicP.h>
  #include <X11/StringDefs.h>
+ #include <Xm/ManagerP.h>
  #include "CenterP.h"