🚀 go-pugleaf

Does anyone have information on the care and feeding of the output of
the eqn and tbl preprocessors.

I would like to write my own versions of EQ and EN as well as TS and TE.
I have some preliminary versions working, but there are some things
I do not understand.  Particulary, I am trying to figure out how mark
and lineup from eqn are implemented.

I am inspecting  the EQ and EN macros provided with ms.  These refer
to an EP register. However, this register
never seems to be set in either ms or the output of 
EQN.  It is obvious however, that if the MK register, set by the output
of eqn, is not zero, that something is happening in reference to mark-lineup.

What precisely do these preprocessors assume that the macro package is doing
for them?  This information is not available in the eqn or tbl documentation?
 Laurence Leff, Ph.D               |A job is like sex, when you do it for money
CS,SMU, Dallas, Texas 75275-0122,  |You take away all the fun.
Phone: 214-692-3459 Moderator comp.doc.techreports/TRLIST, Symbolic Math List 
 convex!smu!leff leff%smu.uucp@uunet  E1AR0002 at SMUVM1 (BITNET)