This page summarises the policies and conventions described at clc-wiki:Policies#Licencing_and_copyright.
General
All contributions are released under the GNU Free Documentation License 1.2 (GFDL).
Code
All code contributions are simultaneously released into the public domain unless otherwise stated. Any other chosen licence must be compatible with the GFDL.
Copyright-holder Permission
Material must not be contributed if the contributor does not have the right to do so.