That was exactly the point, for a 1st round I used an external editor, then I needed to know exactly what AG supports, this is like the 20th version made just to fix BBcode problems.
Since there is no way to edit a post that is not the OP and here there is no OT section I guessed I could combine sandbox and question here.
I found several undocumented tags that work well, any chance that an administrator could tell me if it's intentional or just something that could disappear in the future?
Thanks for the answer. @Ferret, it could be possible to have a list of the tags that work now? All the guides I found are quite old and lack a lot of them.
I don't mind not having buttons to put them automatically, but a well documented list would be very useful.
Lastly, it seems I can use colors (only if I edit afterwards), so they aren't removed, just forbidden?