Web Development 
Description
IMPORTANT: Javascript must be ON to test the Layout UI.
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Parent
The parent function is very easy to use. The parent icon uses the same analogy as a parent directory except layouts have divisions instead of folders.
Selected divisions are pairs.
Divisions are either primary or secondary.
Keep clicking on the parent icon to navigate all the way up to the root division, ie. all the way up to the entire layout. Once you navigate to a level of the layout you are targeting, you can resize, insert and delete at that level.