=== Feature requested:
When I edit on a horizontal screen, I want to view my output next to my syntax, so I can easily check for typos and formatting.
=== Functionality/software changes
 functionality goes into Wikieditor extension of 2010 text editor
 add/adjust preview buttons and add event handlers to show or hide page preview or ineditor preview
 add breakpoints for vertical screen split editor
=== User interface changes
Ineditor Preview Inactive:
Ineditor Preview Active:
Page Preview Active:
==== Interface text/changes:
Adujst/add new buttons that will allow to expand and collapse the layout and switch between vertical and horizontal stacking.
=== Does this need QA?