[CM] about output to cmn file

[Ville Isomottonen]

I'm outputing my musical events to cmn-file to display as eps.
I learned the way to initialize staffs.
(define staffs '((0 :name ...)))
and then output events with staff id (new midi ... :channel 0)

But, I'd like to output (display) meterchange into certain staff
into cmn-file (every time i call my process-function to output events of
next phrase)
Is there something for this task ?? (set-meter ...)??
I'm using cmucl-cm-clm-cmn combination.

Thanks, Ville Isomöttönen