LFUN
  string * filterExtra (string prop)

DESCRIPTION
  Determine the extra string data associated with a property.

  Argument:
    prop: the property in question.

  Result:
    An array of the strings associated with property <prop>.

  The function queries each entry of P_EXTRA_DESC for an field named
  <prop>, which is an array of strings or closures, and returns it
  after replacing the closures by the result of their evaluation.

  This function should not be used manually.

IMPLEMENTED
  /std/thing/description

SEE ALSO
  Long(LFUN), Noise(LFUN), Smell(LFUN), Short(LFUN)