Yes, there are two editors available at Lottery Post. We aim to please!
The Rich Text Editor is the default that most people use. It is a very advanced text editor, pushing the limits of what web browsers are capable of. However, most people do not even attempt to use the more advanced features. All the buttons are right there and advanced features can be used by clicking a little button, but alas, I cannot force people to click the buttons.
The Simple Codes Editor is activated if you go into the Board Settings page (in the Options menu) and un-check the Rich Text Editor option. The Simple Codes Editor is much more like a traditional editor used on forums. Instead of editing in a WYSIWYG (what you see is what you get) view, you type codes. For example, in the Rich Text Editor if you wanted bold text, you would highlight the text and click the "B" button (or press Ctrl+B). The text would literally become bold in the editor, like this. In the Simple Codes Editor, you would place [B] markers around the text you want to be bold, [B]like this[/B], and you would see th text become bold only when it is posted, or when you click Preview.
The reasons you would want to use the Simple Codes Editor would be that it loads quicker, since the program code is much smaller, and because it will work in just about any web browser, as opposed to the Rich Text Editor, which requires a modern web browser, such as IE6/7, Safari, Opera, or Firefox. Some people just want to get rid of the complexity of the Rich Text Editor, since they don't use the advanced features, and that's fine too. That's why I went through the difficulty of implementing two separate editors!
From your previous discussions on the subject of the editor, my guess is that you use the Simple Codes Editor, not the Rich Text Editor. The Simple Codes Editor is not capable of doing tables/grids, but the Rich Text Editor is. And it is very easy to do, as I mentioned.
There is no documentation, but it's fairly self-explanatory, especially if you are willing to spend a few minutes to experiment with it.
I created that little sample grid in about 20 seconds, if that much. People tend to look at the advance features like it's climbing Mount Everest, and I'm not sure why. You literally click a button and fill in some information about how you want it to look.
In the case of the grid, you click the Create Table button (left side of third toolbar row) and when the box pops up, tell it how many rows and columns to make the table. If you want gridlines, specify "1" for the border. You can make the gridlines single lines by setting cell spacing to zero (0). You can set the background color of the entire table. Etc., etc. When you click Insert, the new table is inserted into your editor. Really not too tough.
You can add or delete rows simply by right-clicking on the rows, just like in Excel. You can change the color or any other properties of a row or cell by simply right-clicking on the row or cell and selecting "Row Properties" or "Cell Properties".
It is really not rocket science. Anyone who has posted on the predictions board has done something more complicated than creating a table.
I hope this will help people to want to try it out. When you get some spare time, go experimenting. Not only in the editor, but throughout the site. There are many great features waiting to be found!