/usr/share/games/trackballs/levels/motion1.set is in trackballs-data 1.2.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | (name (_ "Pendulum Motion"))
(first-level-file "motion1")
(first-level-name (_ "Motion One"))
(desc1 (_ "This is a single level in a level set by Warren D. Ober."))
(desc2 (_ "Be prepared for some fast paced action here."))
|