Olympia: The Age of Gods PBEM (May 4 1999)

use

use skill [arguments ...]
* time: varies
* priority: 3

Make use of a skill or spell that the noble knows. Sub-skills often have a function which is invoked through use. For details on a particular sub-skill, consult the skill's lore sheet.

Category skills do not have direct use functions. For example, one could use the Sailing [9502] skill to sail a ship:

use 9502 west

But no use function exists for the category skill, Shipcraft [120].