Topic for moders.

You should create the next file
In this file, you should put the patch to add new items, and is the same file to add new tabs. Remember to ALWAYS put the new tabs BEFORE the new items.

Now, this is what you should put in the patch to add an item. Remember, you should put this operation for every item you want to add.

Where:

• <category> is the category of the item that you want to add. In the base mod, you have 11 categories from the one to choose: featured (is a rotation, you can't add items, but lists), deed (The tab Colony), furniture(The tab Outdoor), indoor, bedroom, kitchen, comerce, science, art, lights and misc.
  
• <itemID> is the ID of the item that you want to add.

And that's it. Have fun!