[nt]roff drivers for EPSON printers

[Manfred Brands]

I just received a xenix package including development and text processing
system and I have two questions regarding nroff and troff.

- Nroff uses file from /usr/lib/term.
	Has anybody managed to create drivers for the ANSI screen and/or EPSON
	printers. I can't get characters in the driver having the eight bit on.
	I read in the documentation that this couses nroff to go into plot mode,
	whatever this may be in a character oriented text processor.
	For my EPSON printer I could print each character using an escape
	sequence telling the printer to set the eight bit to 1, send the
	character with the eight bit off and an escape sequence to tell my
	EPSON to clean the eight bit.
	But this way I need 5 characters instead of 1.
	And I can't use it for my screen.

- Troff generates files for a C/A/T phototypesetter
	Does anybody know what the format is of the commands used.
    Again, has anybody made a driver for an EPSON and/or EGA/HERCULES
	grafics.

Any help would be appreciated,

Manfred.

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