An implementation must document the character scripts it supports. For each character script supported, the documentation must describe at least the following:
read
treats
different characters as equivalent must be documented.
char-upcase
,
char-downcase
,
and the case-sensitive format directives.
In particular, for each character with case,
whether it is uppercase or lowercase,
and which character is its equivalent in the opposite case.
char-equal
, char-not-equal
,
char-lessp
, char-greaterp
,
char-not-greaterp
, and char-not-lessp
.
alpha-char-p
,
lower-case-p
,
upper-case-p
,
both-case-p
,
graphic-char-p
,
and
alphanumericp
.