(info: simp -- simple subroutine example -- Ctrl-U to edit)
o<simp> sub
  #<ra>       = #1 (=.6 Radius A) ;Example parm with    comment
  #<radius_b> = #2 (=0.4)         ;Example parm with no comment
  #<feedrate> = #3 (=100)
  g0x0y0z1
  g3 i#<ra> f#<feedrate>
  g3 i[0-#<radius_b>]
o<simp> endsub