Georg Baum wrote: > Am 05.08.2016 um 21:11 schrieb Richard Heck: > >> So far as I can see, the fourth of these, in whichever version, is never >> used in the existing code. > > This was added because the macro machinery did support it already.
small correction: it is used by \leq, \geq etc, but the last field is empty (it is optional). Georg
