1. The last few patches have brought us changes in the WoW Interface Frame. Now instead of the bare bone WoW options and configuration, there is an addon tab. Certain addons are listed there and each uses the frame to control the addon's options. Many addons no longer have their own frame to call for setting options, they use the WoW Interface/Addon Frame.

    Do you have a guide to registering and creating an options frame inside the WoW Interface Frame? Calling it for manipulation and customization?

    There's documentation within FrameXML itself. That has been in WoW for a very long time now. See the comments in the middle of the file here.

    I found this fairly helpful as Interface Options Panel on WowWiki

    Link seems to be broken Interface Options Panel