DEF FN Example
10 CLEAR SCREEN
20 PRINT "Calling Add function to do the following:"
30 PRINT "5 + 8 =";FNAdd(5,8)
40 PRINT "Calling Message function."
50 PRINT FNMessage$("Hello")
60 END
70 DEF FNAdd(A,B)
80 RETURN A+B
90 FNEND
100 DEF FNMessage$(OPTIONAL String$)
110 RETURN String$&" was passed as a parameter."
120 FNEND
