port contains sgmlfmt(1), instant(1) and the translation files for
linuxdoc and docbook. Barring any complaints, all remaing SGML stuff
in 2.2 and current will be removed.
As far as I know, sgmlfmt was the largest perl program in the source
tree, so for people wanting to get perl4 out of the base distribution,
start sharpening your knives. :)