Readme.txt for devsDoc dircctory

The files in this directory are as follows:

DriveDev.txt
    This is a VERY simple manual page describing the Drive Device
    from the outside, as a manual page.
UDFDevs.txt
    This tries to explain the "single surface device" abstract base
    class, as well as the one for the "multi-surface device". It
    focuses on what is required for anyone writing their own device
    classes.
UDFHPDev.txt
    This explains in more detail how the HP-supplied multi-surface
    device has been implemented. It includes how it works, and the
    assumptions it makes, etc. It treats the HP implementation as an
    example for implementors. 
     
