Date   : Fri, 27 Jul 1984 23:39:00 MDT (Fri)
From   : "Frank J. Wancho" <WANCHO@Simtel20.ARPA>
Subject: ? ASM S error flag

Dave,

The error code is documented in the MAC manual:

S - Syntax error: the fields of this statement are ill-formed and
cannot be processed properly; may be due to invalid characters or
delimiters which are out of place.

Both ASM and MAC share common roots, and, for some reason, this
description was left out of the ASM manual.

It usually means there is some invisible character in the line, such
as a NULL, and the fix is to delete the line and retype it.  Note that
it is possible for the line either before or after the flagged line to
actually have the offending character.  So, it may save some time to
simply retype all three lines...

--Frank