Show all Visual
Paradigm supports a large volume of model elements, but not all of them are well known or meaningful. By default, we hide away those elements that aren't popular. If you need to edit their templates you can check Show all to reveal them.
Filter
Filter the items to be displayed in element list.
List of elements
The elements that support template editing. If you have chosen to list Diagram Type (in Type of project data), you will see a list of diagram here. If you have chosen to list Model Type, you will see a list of model elements here.