Common: bar; or; or-bar; v-bar; pipe; vertical bar. Rare:
; gozinta; thru; pipesinta (last three from
UNIX); [spike].

~
Common: ; squiggle; [649]twiddle; not. Rare: approx;
wiggle; swung dash; enyay; [sqiggle (sic)].

The pronunciation of # as `pound' is common in the U.S. but a bad
idea; [650]Commonwealth Hackish has its own, rather more apposite use
of `pound sign' (confusingly, on British keyboards the pound graphic
happens to replace #; thus Britishers sometimes call # on a U.S.-ASCII
keyboard `pound', compounding the American error). The U.S. usage
derives from an old-fashioned commercial practice of using a # suffix
to tag pound weights on bills of lading. The character is usually
pronounced `hash' outside the U.S. There are more culture wars over
the correct pronunciation of this character than any other, which has
led to the [651]ha ha only serious suggestion that it be pronounced
`shibboleth' (see Judges 12:6 in an Old Testament or Tanakh).

The `uparrow' name for circumflex and `leftarrow' name for underline
are historical relics from archaic ASCII (the 1963 version), which had
these graphics in those character positions rather than the modern
punctuation characters.

The `swung dash' or `approximation' sign is not quite the same as
tilde in typeset material but the ASCII tilde serves for both (compare
[652]angle brackets).

Some other common usages cause odd overlaps. The #, $, >, and &