-d, --detach
After auto-updating (unless -n was supplied), and after launching the game (if -u was supplied),
shticker_book_unwritten will simply exit. If the game was launched, then its process is thus orphaned. On
POSIX, an orphan continues running normally and is reparented to the init process (actually, on Linux, the
closest parent process marked as a subreaper).
-u, --username <username>…
If this option is supplied, then after (possibly) auto-updating, the game will be launched with these
username(s). The password(s) will be prompted for as normal if they aren't saved. Then, if the login(s)
succeed, command mode is entered (assuming -d is not supplied).