multiple escape: n., adj. 1. n. the syntax type of a character
that is used in pairs to indicate that the enclosed characters
are to be treated as alphabetic2 characters
with their case preserved.
For details, see Section 18.104.22.168 Multiple Escape Characters.
2. adj. (of a character)
having the multiple escape syntax type.
3. n. a multiple escape2 character.
(In the standard readtable,
vertical-bar is a multiple escape character.)
multiple values: n.
1. more than one value.
The function truncate returns multiple values.
2. a variable number of values, possibly including zero or one.
The function values returns multiple values.
3. a fixed number of values other than one.
The macro multiple-value-bind is among the few
operators in Common Lisp which can detect and manipulate