In TUGboat volume 11 number 3, Amy Hendrickson gives some modified
routines for \newcount that do work inside groups.  Perhaps they should
be included.

Similarly for definitions of \loop and \iterate that have been published
in TUGboat.

FABROADI@CUGSBVM.BITNET suggests that the verbatim macros be extended to
allow things like:

\verbatim{first line
second line 
third line}

to optionally have line numbers.

The double column situation is truly a mess.  Two people (David Guichard
and Paul Abrahams) have contributed essentially new implementations.
They are in test/pcol.tex and test/gcol.tex.  I haven't incorporated
either into the main source yet.  For one thing, Plain's handling of
insertions and footnotes is not very extensible.  It seems wrong to me
to just work around the bad definitions by adding a line here and a line
there (even though I did it myself with the footnote stuff).  Instead,
the various possibilities should be done through lists, so that new
insertion classes don't require physically copying the output routine.
