--- Libc/Libc-583/stdlib/atexit.3
+++ Libc/Libc-498/stdlib/atexit.3
@@ -36,20 +36,18 @@
 .\"     @(#)atexit.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD: src/lib/libc/stdlib/atexit.3,v 1.10 2002/12/18 13:33:03 ru Exp $
 .\"
-.Dd May 20, 2008
+.Dd September 6, 2002
 .Dt ATEXIT 3
 .Os
 .Sh NAME
 .Nm atexit
 .Nd register a function to be called on exit
+.Sh LIBRARY
+.Lb libc
 .Sh SYNOPSIS
 .In stdlib.h
 .Ft int
 .Fn atexit "void (*func)(void)"
-#ifdef UNIFDEF_BLOCKS
-.Ft int
-.Fn atexit_b "void (^block)(void)"
-#endif
 .Sh DESCRIPTION
 The
 .Fn atexit
@@ -62,43 +60,22 @@
 .Fn main .
 Functions so registered are called in reverse order;
 no arguments are passed.
-#ifdef UNIFDEF_BLOCKS
 .Pp
-The
-.Fn atexit_b
-function is like
-.Fn atexit
-except the callback is a block pointer instead of a function pointer.
-.Bd -ragged -offset indent
-Note: The
-.Fn Block_copy
-function (defined in
-.In Blocks.h )
-is used by
-.Fn atexit_b
-to make a copy of the block, especially for the case when a stack-based
-block might go out of scope when the subroutine returns.
-.Ed
-#endif
-.Pp
-These callbacks must not call
+These functions must not call
 .Fn exit ;
 if it should be necessary to terminate the process while in such a
 function, the
 .Xr _exit 2
 function should be used.
-(Alternatively, the callbacks may cause abnormal
+(Alternatively, the function may cause abnormal
 process termination, for example by calling
 .Xr abort 3 . )
 .Pp
-At least 32 callbacks can always be registered;
+At least 32 functions can always be registered;
 more are allowed as long as sufficient memory can be allocated.
 .\" XXX {ATEXIT_MAX} is not implemented yet
 .Sh RETURN VALUES
-#ifdef UNIFDEF_BLOCKS
-.ds ATEXIT_B atexit_b
-#endif
-.Rv -std atexit \*[ATEXIT_B]
+.Rv -std atexit
 .Sh ERRORS
 .Bl -tag -width Er
 .It Bq Er ENOMEM