27 Sep
2015
27 Sep
'15
5:51 p.m.
Mark Longridge scripsit:
Maybe there was the ability to use overstrike
characters on the teletype?
That's inherent in the nature of printing terminals: 'X', BS, '_'
worked
fine on all such terminals to produce an underlined X. Later it was
found to be better to use '_', BS, 'X', which looked the same on
actual
TTYs or equivalents (LA34/36) and was greatly superior on video terminals.
--
John Cowan http://www.ccil.org/~cowan cowan(a)ccil.org
Any sufficiently-complicated C or Fortran program contains an ad-hoc,
informally-specified bug-ridden slow implementation of half of Common Lisp.
--Greenspun's Tenth Rule of Programming (rules 1-9 are unknown)