This rudimentary script can be sluggish, but be patient.  It can greatly speed up some simple rolls for you.
Type !critloc to determine Critical Hit Location.
Type !crithead, !critarm, !critbody, or !critleg to roll a critical hit for the appropriate location.
Type !crithead x, !critarm x, !critbody x, or !critleg x to determine the outcome of a critical rolled by other means.
For example: !crithead 99 will return the results of a Critical hit to the head with a value of 99.
Type !oops to roll an Oops! result.