The JumpPlay patch changes the behavior of the replay function if cutting marks are set. If an end mark is reached during replay the replay position jumps to the next start mark if available. This way commercials can automatically be avoided without cutting.
This feature can be disabled in the setup.
If the patch is compressed you have to unpack it bevor
Now you can install it with
cd $SOURCEDIR/VDR patch -p 1 < /path/to/patch
Note, VDR has to be recompiled now, see VDR installation.