[Groff] once more hdtbl

[Joachim Walsdorff]

Larry and Werner,

thanks for spending your time to improve hdtbl. It's a good idea to 
seperate hdtbl- and example stuff into hdmisc.tmac respectively 
common.roff. But some little things now seem to be wrong.

1) In fonts_x.in und fonts_n.in:
.so examples/common.roff
is missing.

2) I would remove line 87 in Makefile.sub to prevent common.roff from 
beeing deleted by make clean.

3) In common.roff the traps for makros HM and BM are missing:
.wh 0 HM und .wh 0-1.5i BM

4) Also the initialization for t*HM nd t*BM (running title, running footer):
.ds t*HM //arbitrary text for pageheader, except on the first page//\"
.ds t*BM //arbitrary text for pagefooter, except on the last page/\\n[%]/\"

5) initialization of registers s and v in hdmisc.tmac is lost (necessary 
for proper work of macro pv):
.nr s \n[.ps] and .nr v \n[.v]
Also registers l, p and o should be set, for example:
.nr l \n[.l], .nr p \n[.p] and .nr o \n[.o]

6) In common.roff the line .mso hdtbl.tmac must be placed at the 
beginning (or before the refence to pv).

7) Macro EM and .em EM should remain in hdmisc.tmac.

Larry, furthermore no initialization is necessary before creating 
tables! And in groff_hdtbl.man should be described only hdtbl specific 
things and not utility macros like pv and other. pv is used by hdtbl, 
but it is useful independent from hdtbl, like others as P1, PN, getarg, 
index, SP, DI, time... And the naming convention is simply, that only 
hdtbl specific/exclusive names are preceeded by t*. (Most of the other 
names are historic, taken from an elder macropackage which run under 
AIX-troff; therefore the one and two character names.)

Joachim

--
Dr. Joachim Walsdorff
Hauptstraße 225
D 69117 Heidelberg
Tel. 06221-28680