Duplicated as Mirrored Internal line

Purpose：

Generate a mirror-symmetrical internal line for the selected internal line.

Operation Path：

Edit Pattern▶Right-Click Menu of Edit Pattern ▶ Duplicated as Mirrored Internal Line

Operation Method:

1. In the 2D window, left-click to select an internal line, then click "Generate Symmetrical Internal Line" via the right-click menu.

2. Select a line as the axis of symmetry, then right-click to confirm and generate the symmetrical internal line.