References: <874332F9-007B-4945-87D5-48B28BBC11CC@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Message-ID:  <65681.9837.qm@web82005.mail.mud.yahoo.com>
Date:         Fri, 21 Aug 2009 09:54:48 -0700
Reply-To: Mailing list for the LaTeX3 project
              <LATEX-L@LISTSERV.UNI-HEIDELBERG.DE>
Sender: Mailing list for the LaTeX3 project <LATEX-L@LISTSERV.UNI-HEIDELBERG.DE>
From: Paul Thompson <patjah@SBCGLOBAL.NET>
Subject: Re: template customising
To: LATEX-L@LISTSERV.UNI-HEIDELBERG.DE
In-Reply-To:  <874332F9-007B-4945-87D5-48B28BBC11CC@gmail.com>
Precedence: list
Status: R

I'll dip my toe in with an observation. 

I note the increasingly abstract and object-oriented (sort of) nature of the Te

 Paul Thompson/Joy Hembel


Professor and Senior Scientist
Director, Methodology and Data Analysis Center
Sanford Research
900 W Delaware
Sioux Falls, SD    57104


O: 605-312-6016
M: 618-974-0473
H: 618-394-1246
F: 605-328-0401


25 Signal Hill Blvd
Belleville, IL   62223-1650
618-394-1246


----- Original Message ----
From: Will Robertson <wspr81@GMAIL.COM>
To: LATEX-L@LISTSERV.UNI-HEIDELBERG.DE
Sent: Thursday, August 20, 2009 2:25:13 AM
Subject: template customising

On 20/08/2009, at 2:32 AM, Joseph Wright wrote:

> Just a first thought, based on a better understanding of the concept. As
> you say, this might not be the best idea in the end.   I will probably
> write myself some (private) notes on the structure now I have a better
> picture of how things work, and see if anything else strikes me.

I think I see where my model of what's going on (particularly regarding collections) was slightly off-kilter. I agree we should delay discussing the mechanics (names, order of the args) until after we're solid on the fundamentals.

I've now got a new question. Following Joseph's examples, we might have something like \chapter which uses an instance 'chapter' of type 'sectioning'.

What should be done at the document design level to customise the look of the chapter headings? I don't think we want to have to redefine \chapter, so there are two options:

1. create a fresh instance called 'chapter' with the desired parameters,
2. "edit" the current 'chapter' instance.

The first option is what is necessary in, say, titlesec. I've got to admit it's not my favourite, because it requires you to possibly set or re-set a bunch of parameters that you were already happy with. (And you also have to know the name of the template it was produced with.)

Let's say then that I'd like to be able to edit the instance 'chapter'; is there any way to be able to do this?

I imagine markup like

    \EditInstance{sectioning}{chapter}% template is implicit!
        { ...keyvals... }

but I don't know if my desire for this construct illustrates a misunderstanding of mine of the system.

Will

P.S.  I guess that something like the above \EditInstance would require a saved keyval list for the parameters used to generate the instance; however, I don't think that's an unacceptable use of memory.