LSUBR CONS and `

[MOON at MIT-MC (David A. Moon)]

In my opinion LIST* (or LIST.  ?) is a much better name
for that operation than CONS.

Note that ,@ 's only conflict with other syntax for @ is that
you must remember not to put an @ immediately (without intervening space)
after a comma.  This is irrelevant to whether @ is a macro character
or an alphabetic.  I.e. comma does a tyipeek looking for an atsign.