Am 28.11.2018 um 12:04 schrieb Riccardo (Jack) Lucchetti:
On Tue, 27 Nov 2018, Sven Schreiber wrote:

Could we please have different and more self-explanatory names instead of A and Z here? Something like ABweights and/or GMMinsts or something.

Done and pushed. The new names are "wgtmat" and "GMMinst". I also added a short section to Chapter 20 of the user's guide.