grog.pl: add handling of first lines like .\" [eprt], ignore $Sp
grog.man,groff_char.man: use license website instead of postal address
grog.pl: add more first line gessing groff option characters
grog.man: order the guessing options
groff_char.man: add notes for half of the tables
Fix mark for calling `tbl'.
in all man-pages of groff, change first line leading character into apostrophe, where suitable
groff_char.man: complete notes in tables
grog.pl: error messages for a document's first line
man/groff.man: in special characters, add the mentioning of the
`groff' writing `\[xy]'.
groffer: replace all options --*viewer* by a single --viewer
 man/roff.man: move .TH at the beginning
src/roff/grog/grog.pl:
	- Remove `$Sp' mostly.
	- Reorder script.
	- Check and repair requests.
	- Add final character `$' or `\s' to many checked requests.
In <groff-top>/contrib/groffer do:

groffer.pl:
	Fix ligature error `fi', etc. in pdf-mode by appending
	`-P-y -PU' to `grog' call.
	pfd2-mode works, but still has the ligature error.

func.pl: Reorder.

version.sh: Upgrade to version 2.1.1.
src/roff/grog/Makefile.sub: Remove changing of first line `#! ...'.
grog.pl: reinstall old version
Proposal to use -P-y -PU arguments for groff in -Tpdf mode.