Autzoo.210 hacknews utzoo!henry Sun Feb 22 21:40:08 1981 kernel-related include files User-accessible include files (i.e. those that live in the /usr/include tree) which are duplicates of system include files (i.e. those that live in /usr/sys/h) should instead consist of a single line: #include "/usr/sys/h/whatever.h" This lets the relationships be maintained regardless of unlinking etc., some of which is inevitable when SCCS is used.