Documentation call for help

The good news:

There is now some usable documentation for all the git commands except 
for the following:

	git-archimport	(Martin?)
	gitk		(Paul?)


The bad news:

Some, if not most, of the command documentation is incomplete or 
possibly incorrect. Mostly it's a case of the documentation not keeping 
pace with changes in the code.

You can help by comparing the implementation of a command with it's 
documentation and producing a patch to fix or, at least, improve the 
documentation.