TEX_DEFAULT:
A knob to choose teTeX or TeXLive. One can specify in /etc/make.conf.
USE_TEX:
A knob for port developers. Valid keywords are listed in
bsd.tex.mk.
environments. They make it possible to have a tabular that spans multiple
pages. Each page is its own tabular environment, thus the various parts may
have different widths.
WWW: http://www.ctan.org/tex-archive/macros/latex/contrib/supertabular/
PR: ports/126673
Submitted by: Jorge Niedbalski <niedbalski@gmail.com>