Char Table Types - SXEmacs Lisp Reference Manual

Each char table type is used for a different purpose and allows different sorts of values. The different char table types are

category: Used for category tables, which specify the regexp categories that a character is in. The valid values are nil or a bit vector of 95 elements. Higher-level Lisp functions are provided for working with category tables. Currently categories and category tables only exist when mule support is present.
char: A generalized char table, for mapping from one character to another. Used for case tables, syntax matching tables, keyboard-translate-table, etc. The valid values are characters.
generic: An even more generalized char table, for mapping from a character to anything.
display: Used for display tables, which specify how a particular character is to appear when displayed. #### Not yet implemented.
syntax: Used for syntax tables, which specify the syntax of a particular character. Higher-level Lisp functions are provided for working with syntax tables. The valid values are integers.

— Function: char-table-type char-table

This function returns the type of char table char-table.

— Function: char-table-type-list

This function returns a list of the recognized char table types.

— Function: valid-char-table-type-p type

This function returns t if type if a recognized char table type.