These commands list all available stats: attributes, abilities (broken into talents, skills and knowledges), backgrounds, disciplines for vampires, gifts for shifters, and miscellaneous. Other categories are useful only for coders, so you should ignore them; mortals don't need a 'Mortal' stat on their sheet, for example. Stats marked with a * are generally not available to players. This does NOT mean "pester your ST for them because you're a special case", either. ;)
statmatch() returns the attribute name where a stat may be located.
statn() returns the name of a stat from a substring, picking the first available stat that matches the substring - multiple matches are not returned.
[p]stat() returns the value of a player's [permanent] stat.
> say statn(dri)
You say "Drive"
> say statmatch(Drive)
You say "Skills"
> say stat(#13,Drive)
You say "4"
> ex #13/SKILLS
SKILLS: Drive=4:5 Melee=2:2 <etc>
> say pstat(#13,Drive)
You say "5"