Uppercase-only text or display messages.
Some archaic operating systems still emit these. See also
runes, smash case, fold case
There is a widespread legend (repeated by earlier versions of this
entry, though tagged as folklore) that the uppercase-only support
of various old character codes and I/O equipment was chosen by a
religious person in a position of power at the Teletype Company
because supporting both upper and lower cases was too expensive and
supporting lower case only would have made it impossible to spell
`God' correctly. Not true; the upper-case interpretation of
teleprinter codes was well established by 1870, long before
Teletype was even founded.
