--- Libc/Libc-583/sys/shm_unlink.2
+++ Libc/Libc-262/sys/shm_unlink.2
@@ -20,7 +20,7 @@
 .\" 
 .\" @APPLE_LICENSE_HEADER_END@
 .\"
-.Dd August 31, 2006
+.Dd September 20, 1999
 .Dt SHM_UNLINK 2
 .Os Darwin
 .Sh NAME
@@ -33,30 +33,19 @@
 .Sh DESCRIPTION
 The
 .Fn shm_unlink
-function disassociates the shared memory object specified by
-.Fa name
-from that name.
-The resources associated with the shared memory object remain intact
-until the last file descriptor reference is removed, e.g., by
-.Xr close 2
-or
-.Xr munmap 2 ,
-at which point the resources are reclaimed
-(if no references exist at the time of the call to
-.Fn shm_unlink ,
-the resources are reclaimed immediately).
-The name can only be reused
-when it is bound to a new shared memory object with a call to
-.Xr shm_open 2
-with the
-.Dv O_CREAT
-flag.
+function removes the shared memory object named by
+.Fa name .
+If no process has the file open, then all resources associated
+with the object are reclaimed.
+If one or more process have the object open, the name removed,
+but the removal of the memory object is delayed until all
+references to it have been closed.
 .Sh RETURN VALUES
 Upon successful completion, a value of 0 is returned.
 Otherwise, a value of -1 is returned and
 .Va errno
-is set to indicate the error,
-and the named shared memory object will remain unchanged.
+is set to indicate the error, and the named shared memory object
+will remain unchanged.
 .Sh ERRORS
 The
 .Fn shm_unlink
@@ -66,12 +55,9 @@
 Permission is denied to be remove the object.
 .It Bq Er ENAMETOOLONG
 .Fa name
-exceeded the name size limit.
-This is currently
-.Dv PSHMNAMLEN
-characters (defined in
-.In sys/posix_shm.h ) ,
-but this may change in the future.
+exceeded
+.Dv SHM_NAME_MAX
+characters.
 .It Bq Er ENOENT
 The named object does not exist.
 .El
@@ -79,9 +65,9 @@
 .Xr close 2 ,
 .Xr mmap 2 ,
 .Xr munmap 2 ,
-.Xr shm_open 2 ,
 .Xr shmat 2 ,
-.Xr shmctl 2
+.Xr shmctl 2 ,
+.Xr shm_open 2
 .Sh HISTORY
 .Fn shm_open
 is specified in the POSIX Realtime Extension (1003.1b-1993/1003.1i-1995).