man.output.quietly
boolean
man.output.quietly
Suppress filename messages emitted when generating output?
Description
If zero (the default), for each man-page file created, a message
with the name of the file is emitted. If non-zero, the files are
output "quietly" -- that is, the filename messages are
suppressed.
  If you are processing a large amount of refentry
  content, you may be able to speed up processing significantly by
  setting a non-zero value for
  man.output.quietly.