What exactly is Derivative ?

[vaidhy@wwdg.com]

Hi,

  I am planning to right a book on Debian. If I read the Debian User's  Manual and add it to the list of references, is my book a derivative ?

Thanks and Regards,
Vaidhy
*--------------------------------------------*
Alike for those who for Today prepare
And those that after a Tomorrow stare;
A Muezzin from Tower of Darkness cries,
"Fools, your reward is nether here nor there".
                          - Omar Khayyam 
*--------------------------------------------*