The ascii vocabulary implements support for the legacy ASCII character set. Most applications should use Unicode support instead.

ASCII character classes:

blank? ( ch -- ? )

letter? ( ch -- ? )

LETTER? ( ch -- ? )

digit? ( ch -- ? )

printable? ( ch -- ? )

control? ( ch -- ? )

quotable? ( ch -- ? )

ascii? ( ch -- ? )

ASCII case conversion:

ch>lower ( ch -- lower )

ch>upper ( ch -- upper )

>lower ( str -- lower )

>upper ( str -- upper )

>title ( str -- title )