The page elements are "widgets", they've no dependencies however they can not be inserted elsewhere than inside a column.
How to add a page element ?
The sidebar list all available page elements.
- Hold a page element and drag it over a column.
- Drop it on the choosen area (A placeholder points the area out).
How to manage a page element ?
Page elements can be edited, deleted, duplicated and sorted.
Hover over a page element to display the options button. Click the button, then “E” to show the page element options.