I don't know them all, but there are codes, yes. And the links I provided use most of the same ones we use here, although for obvious security reasons, this forum doesn't allow the running of scripts in our posts. I noticed one difference in that many bulletin boards use "link" where we use "URL."
I did see some information about tables in one of those links, so you may be in luck.
One thing that I do quite a lot when I want my post to look exactly how I want is to compose a post in GoLive (or any Web design software) and then copy the html (excluding everything before and including "<body>" into the post.
We can't use html here, I don't believe, but your own site can in your forums if you set it that way in the preferences.
Good luck!