index-sort-as proposed wording changes

["Grosso, Paul" <pgrosso@ptc.com>]

Proposed wording for index-sort-as.

> -----Original Message-----
> From: Grosso, Paul [mailto:pgrosso@ptc.com] 
> Sent: Tuesday, 2006 September 26 11:37
> To: dita@lists.oasis-open.org
> Subject: RE: [dita] review of index* elements 

> > index-sort-as
> > -------------
> > There remains lots of issues about "global sort order" 
> > using indexterms within the prolog.  For one thing, this
> > contradicts other decisions we made about what an indexterm 
> > within the prolog means.  See also my email of July 26:
> > http://lists.oasis-open.org/archives/dita/200607/msg00076.html
> > with other questions/issues about sort-as that have 
> > never been answered.
> > 
> 
> Issue:  Given what we've recently decided about indexterms
> in the prolog, are we still planning to allow index-sort-as
> within the prolog define "global sort order"?
> 
> Proposed resolution:
> 
> Do away with the "global sort order" concept for DITA 1.1.
> If and when we do define such, we should use different
> markup than the usual indexterm/index-sort-as.
> 
> ACTION to Paul:  Provide suggested wording (or delete some
> existing wording as necessary).
> 
> ---
> 
> Issue:  What happens when two indexterms with different
> content have identical sort-as values?
> 
> Proposed resolution:
> 
> The indexterm textual content itself is effectively considered
> as a "secondary sort field" in addition to the sort-as value, 
> so two indexterms with different content will never merge into
> the same index entry.
> 
> ACTION to Paul:  Provide suggested wording.
> 
> > Furthermore, it isn't clear to me how to use sort-as for 
> > a multilevel index term.
> > 
> 
> Proposed resolution:
> 
> An index-sort-as provides the sort key for the indexterm
> that is its parent.
> 
> ACTION to Paul:  Provide suggested wording.
> 

I've attached an updated dita document wherein:

1.  I deleted the paragraph about global sort order. 

2.  I added proposed wording to indicate that the indexterm
textual content itself helps differential resulting index entries.

3.  I added proposed wording indicating that index-sort-as 
relates just to its parent indexterm.

4.  Added wording saying it is an error for there to be more
than one index-sort-as for a given indexterm.

index-sort-as.dita