,9V]SE ( A ,FUNC;N
           ,EXAMPLES

#A4 ;F 9V]SE IS WRITT5
  _% F^-1 _:
#B4 ;F 9V]SE ( ;X OR ! 9V]SE (
  ;F ( ;X IS WRITT5
  _% F^-1"(X) _:
#C4 ,9V]SE COS9E ( OP5 P>5!SIS
  NEGATIVE "O CLOSE P>5!SIS
  EQUALS PI IS WRITT5
  _% COS^-1 (-1) .K .P _:
#D4 ,9V]SE S9E ( Z]O PO9T FIVE
  EQUALS ?IRTY DEGREES IS WRITT5
  _% SIN^-1 #0.5 .K #30^.* _:









                              #A