This is helpful, Noel. I use a number in a box to indicate memory level, or put an M before the number, e.g. M1. I reserve my circles for the pistons themselves. Hadn't thought about manual pistons before -- thanks. --George / San Francisco noel jones <gedeckt@xxxxxxxx> wrote: Conventional practice in numbering pistons in organ music are as follows: Number in box or circle means GENERAL PISTON. Number preceded by manual name or pedal, indicates a DIVISIONAL PISTON. If you are interested in more information about piston registration, please download THE INSTANT ORGANIST from our website for free. -- noel jones, aago athens, tennessee, usa ------------------------------- frog music press rodgers organ users group www.frogmusic.com ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Find new MIDI music and Guides to Rodgers Organs at www.frogmusic.com To post send messages to: rodgersorgan@xxxxxxxxxxxxx To unsubscribe or change mail delivery (digest, vacation) go to www.frogmusic.com/rodgersmem.html ! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Find new MIDI music and Guides to Rodgers Organs at www.frogmusic.com To post send messages to: rodgersorgan@xxxxxxxxxxxxx To unsubscribe or change mail delivery (digest, vacation) go to www.frogmusic.com/rodgersmem.html