★How to modify the hatch boundary in ZWCAD?

Issue: 

Take the following picture as an example. How to fill in the unfilled part in the middle?

Solution:

1. Double-click the hatch pattern that needs to be modified, the Hatch dialog box will pop up, Click Delete Boundary, and select the outline of the hole that needs to be hatched. At the same time, the hatch boundary function provides multiple modification methods, which can be selected according to the actual requirement.