7B. enumerations (ENUM)
-----------------------
Enumerations are a specific type of constant that need not be given values,
as they simply range from 0 .. n, the first being 0. At any given point
in an enumeration, you may use the '=<value>' notation to set or reset
the counter value. Example:

ENUM ZERO, ONE, TWO, THREE, MONDAY=1, TUESDAY, WEDNESDAY

ENUM ER_NOFILE=100, ER_NOMEM, ER_NOWINDOW