Can non-ShortPoint users edit the content of pages containing ShortPoint Design Elements?

Yes, non-ShortPoint users can edit SharePoint OOTB web parts content and the content within the ShortPoint content-holder Design Elements (such as Panel, Accordions etc.). 

Nevertheless, they will not be able to edit ShortPoint Design Elements: the Insert/Update button in the settings of the Design Elements is disabled for non-ShortPoint users.

Let us look into the SharePoint page content that contains ShortPoint Design Elements in greater detail to see what editing options are available for non-ShortPoint users.

1. This is the Link, a SharePoint OOTB web part which can be updated. Non-ShortPoint users can edit/update/add/delete the SharePoint OOTB web parts.
   
   
2. This is the Panel title, which can be modified only after opening the settings of the Panel. To save those changes, users will need to press the Update button, which is disabled for non-ShortPoint users. Therefore, you cannot change this property if you are not a ShortPoint user.
   
   
3. This is the content of the Panel. The content inside the content-holder Design Elements can be changed by non-ShortPoint users. You can freely edit text, change the font, add images etc. in the content window without opening the settings of the Design Element:
   Other content-holder Design Elements are Accordions, Alert, Animate, Background, Column, Frame, Info, List, Tabs, Templates, TOC Content, Toggles, Well.
4.  This is a connected Simple List. Non-ShortPoint users cannot reconnect the ShortPoint Design Elements to another SharePoint list/library as it requires to hit the Update button to save these changes. Yet, non-ShortPoint users can update the information in the existing list through editing/adding/deleting the items in the SharePoint List/Library. The connected Design Element will dynamically update (unless the caching in the Design Element settings is enabled).