Two comments mentioned s_free(), but the actual name of the function

is s_clear().  Fixed the comments.

src/libraries/libmisc/s-string.h

 /*
- * $Id: s-string.h,v 1.17 2002/08/17 17:24:19 ceder Exp $
+ * $Id: s-string.h,v 1.18 2002/10/04 07:33:27 ceder Exp $
  * Copyright (C) 1990-1996, 1999, 2002  Lysator Academic Computer Association.
  *
  * This file is part of the LysKOM server.
@@ -23,7 +23,7 @@
  * Please mail bug reports to bug-lyskom@lysator.liu.se. 
  */
 /*
- * $Id: s-string.h,v 1.17 2002/08/17 17:24:19 ceder Exp $
+ * $Id: s-string.h,v 1.18 2002/10/04 07:33:27 ceder Exp $
  *
  *  s-string.h
  *		Our own string type.  Definition of string type,
@@ -71,7 +71,7 @@ typedef 	long		String_size;
  *  But the value of this may *not* be used in any destructive call,
  *  since str.string points to read-only memory.
 
- *  Note also that you need to call s_free() on any auto variables
+ *  Note also that you need to call s_clear() on any auto variables
  *  of type String before exiting the block they are declared in,
  *  since otherwise the memory they use will still be allocated.
  *  This is of course the same rules as for normal pointers.
@@ -338,7 +338,7 @@ s_usr_strhead (String	str1,
  *  object points to the same string as STR, but with a possibly
  *  shorter length.  The pointer is unchanged *even* if the length
  *  should be 0, which means you don't "lose" the storage but can
- *  free it with s_free().
+ *  free it with s_clear().
  */
 extern  String
 s_strip_trailing (String	  str,