social - syntax: social("socialname",[CH]) 

Causes the character to perform a social. If the option CH is given, it can be either a name or a CH type variable. Wherever possible, using a CH type variable directly is always more efficient and less error-prone than using a name.

   --- smile $n in old mobprog could be:
   social("smile",ch)  --- CH type variable : Preferred method.
   social("smile", --- is a string, also works.

   --- Nudge a guard if they're here.