Question:
How can I assign a line hinge to a surface?
Answer:
The following options are available:
1) "Edit Surface" dialog box:
Activate the "Hinges" tab (see Image 01) and use the button to create a new line hinge.
2) Types for lines:
Right-click "Line Hinges" under "Types for Lines" in the Data Navigator, create a new line hinge, and assign it to the surface and line; see Image 02.