How to add or delete nodes

The nodes can be found on both ends of every wall or where two or more walls meet. The nodes can be very useful - you can use them to change the position of a wall or to split it into two or more parts. The nodes are especially helpful when you draw a curved wall (see article How to draw a curved wall). 

To add nodes, simply draw another wall on top of an already existing one. 

To delete a node, you need first to select it and select the trash bin icon. It is important to know that when you delete a node, you also delete the walls that are connected to it. 

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