There's the overview, the obligatory guided tour, the chapter on administrative configuration, some advanced topics, and of course, a command reference and troubleshooting guide.
It fit the collaborative nature of the open source world very well.
CVS and its semi-chaotic development model have since become cornerstones of open source culture.
Progress can occur more quickly without a single conduit through which all modifications must occur.
And because the work is versioned, you need not fear that quality is the trade-off for losing that conduit—if some incorrect change is made to the data, just undo that change.
It is the direct result of the authors' encounters with users.