Breadcrumbs - navigate each item and endpoint returns to lesson
Filter - enter values to filter the history list
Rows per page 5, 10, 25, 50, 100 - Use to change the number of histories visable
Page left and right
Radial button to view each history version - The selected version will show on the left.
Editing - The selected history version will show as the version in the content editor
Published - The selected history version will show as the version in eBooks. This should be used to allow editors to edit without changing the eBook. Once the edits are complete the editor can save/publish to show the changes on the eBook.