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Hi Hans,
This is interesting, because I was thinking about this issue this past
weak, and was planning to send a test file:
On Thu, 14 Mar 2013 17:39:50 -0600, Hans Hagen
There is a new experimental feature and (at least for now) it's also called \feature (maybe not the best name).
\stack might be better, for the following reason:
Many fonts have language dependent features. There are also features that one only wants to enable in small text snippets. For this we have \addff etc but these don't accumulate.
We used to have \addfs{<feature>} and \subfs{<feature>}, meaning "add feature to the stack" and "subtract feature from the stack". But those have been broken for a very long time. To round it off I guess we need a replacement for \subfs as well. Thanks for this wonderful new feature (pun intended) and Best wishes Idris -- Professor Idris Samawi Hamid Department of Philosophy Colorado State University Fort Collins, CO 80523