Most of the programs allow you to specify character codes for various purposes. Character codes are always parsed in the same way (using the routines in `lib/charcode.c' and `lib/charspec.c').
You can specify the character code directly, as a numeric value, or indirectly, as a character name to be looked up in an encoding vector.
3.3.3.1 Named character codes Character names are looked up in the encoding.3.3.3.2 Numeric character codes Decimal, octal, hex, or ASCII.