Re: sosofo-append or sequence?

[Tony Graham <tgraham@xxxxxxxxxxxxxxxx>]

At 7 May 1998 09:31 -0400, G. Ken Holman wrote:
 > At 12:07 PM 5/6/98 -0400, Tony Graham wrote:
 > >This started from an off-line discussion with Chris Maden, but does
 > >anyone have an opinion, or a definitive rule, for when to use
 > >sosofo-append and when to use sequence?
 > >...
 > >Seemingly the only time that you need to use sequence instead of
 > >sosofo-append is when declaring characteristics to be inherited:
 > >...
 > >but is that true?

I have also found that I use sequence and "use:", which isn't far from
declaring inherited characteristics:

(make sequence
      use: defined-style
      ...)

 > My understanding is that yes, this is the _only_ difference between the
 > two.  At least, that is how I treat the two.
 > 
 > I am in the practice, though, of using sosofo-append when there are no
 > characteristics to inherit.  When writing programs using the SGML Flow
 > Object Classes, this habit prevents any of the standard flow object classes
 > being "mixed in" with the SGML flow object classes ... not that this should
 > hurt, though, because if the SGML Flow Object Classes had inherited
 > characteristics, then it would be crucial to have the sequence flow object
 > class supported.  Actually, I haven't tried it, but I wonder if you might
 > even have problems using a sequence flow object with JADE's SGML back end
 > (ie. does the JADE SGML back end support the sequence flow object in the
 > flow object tree?).

Yes.  I have used it with good effect, though I haven't found a case
where I used sequence to declare a characteristic to be inherited by
an SGML flow object.

Regards,


Tony Graham
=======================================================================
Tony Graham
Mulberry Technologies, Inc.                         Phone: 301-315-9632
17 West Jefferson Street, Suite 207                 Fax:   301-315-8285
Rockville, MD USA 20850                 email: tgraham@xxxxxxxxxxxxxxxx
=======================================================================


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