All class documentation is written directly in the source code itself and translated using the autogsdoc program. See the source code and documentation for autogsdoc for information on documenting the classes.
Newcomers could write documentation for individual classes by comparing the OpenStep specification, the MacOS-X documentation, and the GNUstep source. Documentation should clearly note where individual methods are specific to OpenStep, MacOS-X or are GNustep extensions.
More experienced people could write documentation on general programming topics, and tutorials for new users.
Anyone willing to write documentation, either tutorials for using GNUstep, or reference documentation for individual classes, should either write it in gsdoc or as plain ascii text for someone else to format into gsdoc.
GNUstep documentation should have copyright assigned to the Free Software Foundation.