       10 // PROC sample program
       20 //
       30 a#:=9; b:=9; c$:="9"
       40 aap(1, 2.500000, "Hallo")
       50 SYS assert, a#=9 AND b=9 AND c$="9"
       60 PRINT "Ok"
       70 //
       80 PROC aap(a#, b, c$)
       90   SYS assert, a#=1 AND b=2.5 AND c$="Hallo"
      100 ENDPROC aap
