Consult the manuals to find a description of the GiD Mesh Library, its modules, the API description, the coding style and licence schema.
A specific section inside our help forum can be used to post all your questions about GiDML: GiD Mesh Library Forum
The GiD Mesh Library is property of CIMNE, who has its Intellectual Property Rights (IPR).
The GiDML_IO module is public, and can be used without licence for any purpose.
All the other modules of the GiD Mesh Library can be integrated in any other software under a specific agreement with CIMNE.
Feel free to contact us at firstname.lastname@example.org for further questions.