:doorstop: /n./ Used to describe equipment that is
non-functional and halfway expected to remain so, especially
obsolete equipment kept around for political reasons or ostensibly
as a backup. "When we get another Wyse-50 in here, that ADM 3
will turn into a doorstop." Compare {boat anchor}.

:dot file: [Unix] /n./ A file that is not visible by default to
normal directory-browsing tools (on Unix, files named with a
leading dot are, by convention, not normally presented in directory
listings). Many programs define one or more dot files in which
startup or configuration information may be optionally recorded; a
user can customize the program's behavior by creating the
appropriate file in the current or home directory. (Therefore, dot
files tend to {creep} -- with every nontrivial application
program defining at least one, a user's home directory can be
filled with scores of dot files, of course without the user's
really being aware of it.) See also {profile} (sense 1), {rc
file}.

:double bucky: /adj./ Using both the CTRL and META keys. "The
command to burn all LEDs is double bucky F."

This term originated on the Stanford extended-ASCII keyboard, and
was later taken up by users of the {space-cadet keyboard} at
MIT. A typical MIT comment was that the Stanford {bucky bits}
(control and meta shifting keys) were nice, but there weren't
enough of them; you could type only 512 different characters on a
Stanford keyboard. An obvious way to address this was simply to
add more shifting keys, and this was eventually done; but a
keyboard with that many shifting keys is hard on touch-typists, who