& @filter
 
  Syntax: @filter <object> = <pattern>[, <pattern>...]
  Attribute: Filter
 
  This attribute specifies a series of patterns to be used to suppress
  text normally forwarded by the AUDIBLE flag.  If the desired pattern
  contains a comma, the pattern may be enclosed in curly braces {}.
 
  Example:
    > @fo test=out
    > @set #378=puppet
    test> test grows ears and can now hear.
    > @filter out = {* has arrived.},{* has left.}
    Set.
    > :has not arrived.
    Wizard has not arrived.
    test> From a distance, Wizard has not arrived.
    > :has arrived.
    Wizard has arrived.
 
  See also:  AUDIBLE, @forwardlist, @infilter, @inprefix, @prefix