If you are new (or old here) and haven't read a TMS book yet or need a refresher course read Dave's posts. The following link will hopefully get you to the threads that contain them, (if I did it right). Dave's posts on TMS are the most concise and TMS knowledgeable of anyone's here.
He is the esteemed moderator of this site and was kind enough to keep it going after Austin Gary, it's founder, moved on--(where are you Gary? I miss your intelligent worldly insights).
Yes it did because Dave has a current post. You need to weed through other posts on past threads to read Dave's. If someone knows how to compile only Dave's posts in one place, I'll volunteer them to do it, I'm rather a Luddite when it comes to IT stuff.