What is the difference between "Force Start" and "Start" in BitTorrent?

My BitTorrent download has been stuck at 99.8% for five hours. The bar is green so I have no idea what's going on.

If I pause it and "Force Start" it again there is still no progress.

1. What's the difference between "Start" and "Force Start"?

2. What's the difference between "Pause" and "Stop"?

• Force start will force a download even if you have more downloads going then you enabled at once. For example, if you set a max download limit of 3 torrents, and have 5 all set to "Start", only 3 will run at once. However, if you force-start one of them, then 4 will run.

• Pause doesn't kill your connections, it just (severely) limits your transfer speed. It keeps the connection open between peers/seeders (and the tracker), so you can (almost) instantly resume downloading.

• Stop closes your connection between you, any peers/seeders, and the tracker.