Some days ago, I shared the new page builder - KingComposer. It got many good reviews, some authors interested in and use for their theme.
If you miss that post, you can have quick review about KingComposer at http://demo.kingcomposer.com/for-theme-author/
Today, I continue to introduce about Section Manage, which you can use as your sample data. It helps you decrease the size of the data sample and customers do not need import all pages anymore.
Actually, the section on KingComposer was managed via a post type – kc-section
When your customers use, They just open the Sections then select which section they want to use then press insert to add into the current page. All tweaks are controlled via click and click without coding
In the video, that is how you add the row to sections.
For more info please check out documents http://docs.kingcomposer.com/sections-manager/
Hope that make sense.