What is a "PI marker" or "programming instruction marker"

[Robert Lauriston]

I don't see any mention of Oxygen in that thread.

On Fri, Nov 30, 2012 at 1:06 PM, Jeremy H. Griffith <jeremy at omsys.com> wrote:
> On Fri, 30 Nov 2012 06:51:20 -0500, Jim Owens
>>I think he may have overstated the case. You can
>>get CHM output from oXygen with a few mouse clicks,
>>and you can easily customize its appearance using CSS.
>
> That's the theory.  The practice... not.  For the
> real picture, have a look at the dita-users group:
>   http://groups.yahoo.com/group/dita-users/
>
> Today there are three answers to a post yesterday
> asking about adding chapter numbers in xref results.