Are the star codes, or rather the actual commands they invoke, considered macros?
Examples:
*58, Disable Call Waiting once, set($Ucwa1,1)
*59, Enable Call Waiting once, set($Cwa1,1)
If yes, they might mean star codes entered from the dialpad are a portal into running any macro you can define.
P.S: I suppose I could read the manual and experiment, however I'm taking the lazy approach and asking instead.