SYNOPSIS
  object * display (string|string * msg, void|object|object* excl)

IMPLEMENTED
  All container objects.

DESCRIPTION
  This function displays <msg> to all seeing objects in the room, except
  those specified in <excl>.
  <msg> may be one string for the 'seeable' message only, or an array of
  two strings for both the 'seeable' and the 'non-seeable' message.
  Result is an array of all seeing recipients.

  Called by kernel objects.

