code branch     $683f end-code
code ?branch    $0001 $6830 $3604 $2900 $D002 $1d3f $cf20 $4728
                $683f $cf20 $4728 end-code

code docol      $b480 $1cef $cf20 $4728 end-code
code next       $cf20 $4728 end-code
code exit       $bc80 $cf20 $4728 end-code
code lit        $3e04 $6030 $cf01 $cf20 $4728 end-code

code execute    $0005 $ce01 $1c6d $4728 end-code