## Edge

Edge command provides the following four operations.

### Add

Click between vertices or lines in the same face, and a new line is inserted and the face is divided.

The vertex is inserted by clicking on a line with Shift key.

Original |  | A line is shown by moving a mouse cursor after clicking a vertex or a line |  | A new line is inserted and the face is divided by clicking on another vertex or line.

When the [Continuous] option is checked, you can add edges on the neighbor faces continuously. You finish the addition by clicking a right button.

More lines can be added into the neighbor faces by clicking vertices or lines additionally. |  | Finished by right-button click

### Erase

A line shared by two faces is erased and the faces are combined by clicking on the line.

Original |  | A color of a line is changed when a mouse cursor is over it. |  | A line is erased by clicking.

### Divide

You can put a new vertex on the line when you click on an existing line, and on the cursor position when you drag.

A new vertex will be created on the middle of the line with Shift key.

A new vertex will be created on the line only with Ctrl key.

Conversely, a vertex between two lines will be deleted with Alt key.

Original |  | Click on a line, and a new vertex is put.
The position is moved by dragging. |  | A vertex is insert on the line after releasing a mouse button.

You can create edges around the new vertex by checking [Triangulate].

[Triangulate] off | [Triangulate] on

### Swap

Click a line shared by two faces, and the line will be swapped clockwise.

Original |  | A line is shown when the middle edge is clicked |  | The middle line is swapped