Editing WoW:UI XML tutorial (section)

==== Example Types ====

''These are usually first in the [[XML]] file.''
*[[XML_elements#Ui|Ui]] - This is the root element, holds all the others in the XML file (worry about later)
**[[XML_elements#Include|Include]] - You specify another XML to load too (ones not listed in ToC file)
**[[XML_elements#Script|Script]] - Refers to a script file (skipped in ToC file) or contains lua script inside
**[[XML_elements#Font|Font]] - Defines a font template (can be used only inside ui tag)

''These begin to actually define screen elements, and are later in the [[XML]] file.''
*[[XML_elements#Widgets|LayoutFrame]] - a basic visible WoW UI element. also called Widgets. 
**[[XML_elements#Texture|Texture]] - defines a texture or visible image. is a LayoutFrame.
**[[XML_elements#FontString|FontString]] - This is just text to read. is also a LayoutFrame.
**[[XML_elements#Frame|Frame]] -  a visible 'window' and basic container for other elements. is a LayoutFrame too.
***[[XML_elements#Button|Button]] - button you can click. A Button is a Frame, A Frame is a LayoutFrame. :) 
***[[XML_elements#CheckButton|CheckButton]] - This is checkbox, used in options
***[[XML_elements#EditBox|EditBox]] - You can enter text here
***[[XML_elements#ScrollFrame|ScrollFrame]] - Used in any window you need to scroll down (quest logs etc.)
***[[XML_elements#Slider|Slider]] - it's a scroll bar for scrolling frames
***[[XML_elements#TabardModel|TabardModel]] - used to select tabard
***[[XML_elements#WorldFrame|WorldFrame]] - A frame to hold the 3D game 'world'. All 3d rendered inside here.
***[[XML_elements#UIParent|UIParent]] - Top built-in WoW 'Frame'. Contains all the 2D UI when game is running.