Talk:RR3 Wiki:Upgrades Strategy For 100% Completion/@comment-27311695-20160904051401

As I recommended before, which is deleted by author, the '+' would be better to replaced by number, '-' is easy to remember if there is only one or two part that is not fully upgraded, maybe it can be shown as -1000000 to represent -1 engine. But right now is already very good.