The GNU Simpler Free Documentation License (GSFDL) is a proposed version of the GNU Free Documentation License (GFDL) that has no requirements to maintain Cover Texts and Invariant Sections. It is meant to provide a simpler licensing option for authors who do not wish to use these features in the GFDL. The GFDLv2 explicitly allows cross licensing to the GSFDL for any work that does not use any of the features that the GSFDL does not support.