s/__BACK_TEXT__/\
Freedoom is an open-content First-Person\
Shooter (FPS) game that is Free and Open\
Source Software. Developed by volunteers\
since 2001, Freedoom is made available\
under the 3-clause BSD license.\
\
This manual gives a wealth of information,\
including how to play the game, strategy,\
tips and tricks and more./

s/__FRONT_TITLE__/Game Manual/
s/__SPINE_TITLE__/Freedoom Manual/