Date: Tue, 5 Mar 1991 19:44 CST
Subject: Re: HP - Program Development Link - Comments
Organization: The Portal System (TM)
Article-I.D.: cup.39855
Lines: 19

I've only had the PDL for a brief period so far --- not enough to
thoroughly evaluate its usefulness, but it does seem to be a fairly
interesting package.  It would have been nice if the "Getting Started"
pamphlet contained a bit more information on the overall design and
use of the system, but the on-line help is thorough.

There is an error in the FLAGS section of the online help (which is
also present in at least Edition 1 of the Programmer's Reference
Guide flag table):  After flag -22 there is a statement that math
exception indicator flags are set whether an event is treated as an
exception or an error.  This is not true.  The appropriate flag
(-23 thru -26) is set only when an event is treated as an exception,
as controlled by flags -20 thru -22.

The math exception/error handling is a valuable concept which, among
others, is not addressed in the HP48 manuals.

Stephen J Thomas
sjthomas@cup.portal.com