Lock tile edges in a fixed position
By locking tile edges, you can avoid joins in awkward places, such as down the middle of a face.
Before you begin: Create a basic tiling.
Click a tile edge. On the toolbar, click the padlock button.
Right-click a tile edge, and click Lock Tile Edge.
Right-clicking a locked tile edge displays the menu item Unlock Tile Edge, with which you can undo the action, if required.