What exactly is a thread?
First of all please use a proper title for your 'thread'!
This is not an AGS-related question so it does not belong here anyways...
Before this gets locked/deleted: A thread is what you just created, it is a new entry in the forums, you can answer, quote and edit it! Oh - and deleted as mentioned above!
I thought this was common knowledge.
A thread starts from the first post and ends with the last post. It is a colelction of posts that are replies to one another, like this page you are on now. This is showing you a thread. A post is part of a thread. And a thread is part of a forum.
This "thread" will now be locked. :)