The version number has three parts, formatted as follows: X.Y.Z
X.Y is the current stable kernel version number (currently 2.0).
Z is the revision number of this FAQ since the last stable kernel version change.
For example, FAQ 2.0.43 was the 43rd revision of the FAQ after the 2.0 kernel was released. When the first official 2.2 kernel was released, the next FAQ version was FAQ 2.2.0.
Note that this FAQ is often updated between Usenet posts. Interim versions of the FAQ are made available at the usual places.