YaX is advertised as a key system, but it rather organizes attributes in parameters, which parameters can be executed, so that YaX is halfway between key management and macro definition (and actually hopes to provide a user’s interface).
Values assigned to attributes can be retrieved and tested in various ways, with full expandability ensured as much as possible.
Finally, YaX’s syntax is a quite peculiar (as few braces as possible), but may be customized.
YaX is based on texapi and thus requires e-TeX.
The author is Paul Isambert.
License: lppl Version: 1.03 Catalogued: 2015-08-03