# Edit House Contour

## Roof editing - building outline - replace line

A line of a building outline is selected. It is thereby replaced by two rubber bands: from the start point to the mouse cursor and from the mouse cursor to the end point. The entire building outline therefore always remains closed. With the right mouse button you can choose between the start point and the end point of the former line as the start point for the new polyline. The former line can now be replaced by any polyline. If the input is terminated with the right mouse button, the last gap is automatically closed by a line.

## Roof editing -- building outline -- move line

A line of a building outline is selected. An arrow indicates the positive sliding direction. The distance by which the line should be moved can be entered.

## Roof editing - building outline - move point

A vertex of a building outline can be selected and moved. The two adjacent lines therefore remain, but their direction and length are changed.

## Roof editing - building outline - delete point

If you want to remove lines from the building outline, vertices are deleted for this purpose. When a point is deleted, the two adjacent lines are replaced by a line from the start point of the first to the end point of the second former line.

## Roof editing -- building outline - delete building outline

The entire building outline including all components or only the components of the building outline or the auxiliary geometry is deleted.
