The manual for XMLada comes with this statement:

| Copyright (C) 2000-2002, Emmanuel Briot | | Copyright (C) 2003-2011, AdaCore | | This document may be copied, in whole or in part, in any form or by | any means, as is or with alterations, provided that (1) alterations | are clearly marked as alterations and (2) this copyright notice is | included unmodified in any copy.

That's all of it. The upstream source is here: https://github.com/AdaCore/xmlada/blob/master/docs/index.rst

What shall we call this license in SPDX notation?

Björn Persson