PR = print current data on Laser printer, or write a Postscript file.

PM  = prints on the screen the parameter list for all items.
PMX = creates a file containing all parameter data.  If you hit only
        <enter> when prompted for a file name, it will write a file with
        the name "PARAM."

P, PP, PPP

     These commands are shortcuts for typing a code 9 items.  They should
     normally be followed by 2 or 3 numbers (parameters 2, 3, 4).

         pp 3 45 -2   will put "pp" at position 45 on staff 3,
                       vertical position -2.

     (See Code 9 for details.)

PI as above, but displays "piu."
PZ as above, but displays "pizz."

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