Add a Log Wall Extension

You can add a perpendicular extension to stiffen an existing log wall.

Right-click to open the context-sensitive menu.
Click Insert Wall.
Select the wall type, parameters and presentation method as you usually would when adding a log wall.
Select Add log wall extension from the contextual toolbar.
Select the wall with the cursor. The cursor is constrained to the direction of the wall.
Select a point on the wall onto which you want to position the extension.
Type the corner length in the text window. The corner length (L) will be measured from the wall surface.

The log wall extension must have the same log profile as the wall.
The center line of the extension is always positioned at the point selected on the wall, and selecting a reference point has no effect.