1) I moved your post to a new thread as your question didn't appear to be related to the original posters question other than both being about SSL VPN.
2) What do you mean by mode? Are you referencing full and split tunnel?
At Remote Access>>SSL>>Global Tab is where this can be configured in the Local Networks box. If you only add specific local networks like Internal (Network), you have configured a split-tunnel. If you add the ANY Network Definition Object, then it will be a full tunnel.
No, it just accepts all entries in there. There wouldn't be any point in adding other objects if you've added ANY, since local networks would already be included. The networks added into this box in the interface get written to the routing table on the client system. Any = 0.0.0.0, which is everything in IPv4 speak.
so basically if i add the 2 entries that i have mentioned, it will automatically be considered full tunnel regardless if i have a specific network entry first followed by Any network..
You can find a large number of articles in the knowledgebase on quite a few topics. Although many were written for v7, much of the information is useable for V8 as well.
Another good resource are the short tutorial videos at Astaro Videos.