Some input on the xparse package:

- It seems me that the o and O{...} commands should be unified, if
possible. The syntax could perhaps instead be o[...]; if the optional
argument is present, it is treated as O{...}.

- If using the ideas of objects I presented before in this list, then the s
commands would return either of the values \Boolean/true or \Boolean/false,
that is ``true'' or ``false'' within the object ``Boolean''. Its syntax
could be generalized to be s[_x_], where _x_ is symbol other than *.

  Hans Aberg
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