[rfc-i] draft-iab-xml2rfc-02 - alignment of sourcecode

[pkyzivat at alum.mit.edu (Paul Kyzivat)]

The "align" attribute has been deprecated for <figure> while not 
deprecated on <artwork>. But if your figure is contained in 
<sourcecode>, what is the alternative? "align" isn't allowed there.

At a minimum, "align" out to be allowed with <sourcecode>.

Also, I think left/center/right aren't sufficient alternatives for 
alignment. At least historically I think these have been measured 
relative the left and right of the *page*, without regard to margins or 
current indent level. I would like to be able to align relative to those.

For instance, consider ABNF source code. I would like the actual content 
of the sourcecode to be valid ABNF. That means that the first line of 
each rule must have no leading whitespace. So any indentation needs to 
come from the "align" attribute. Generally I would probably want to have 
the rules start out aligned with the current indent level, or maybe a 
bit more.

So it would be good to have additional possible values for "align" to 
cover this, or another attribute (e.g. "indent" to specify the origin to 
which "align" applies.

Note that all these things also are relevant to line art. But with line 
art there is less reason not to deal with it by including left 
whitespace within the artwork.

	Thanks,
	Paul