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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: printing underlined text
Message-ID: <14455@smoke.brl.mil>
Date: 14 Nov 90 15:07:53 GMT
References: <1990Nov11.153636.13643@mp.cs.niu.edu> <1990Nov12.183213.8920@ssd.kodak.com> <1990Nov13.074643.3107@ericsson.se>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 10

In article <1990Nov13.074643.3107@ericsson.se> epames@eos.ericsson.se writes:
>Secondly, I would advise against using backspace in any output to a dot
>matrix printer, it causes the buffer to be printed and this can
>significantly slow down the printer.

It's a good idea to filter output through an "overstrike" filter on its
way to a line printer (or in this case dot-matrix printer).  BRL's MDQS
queueing system's line printer server invokes a copyn() function that
takes care of this.  (Based on an earlier implementation by John
Quarterman.)  MDQS is available via anonymous FTP from VGR.BRL.MIL.