Deleting a block or wire
You can delete each block or wire that is currently shown on the canvas. When you delete a block, all wires that are attached to this block are automatically deleted.
To delete a block or wire
On the canvas of the model editor, click the block or wire that you want to delete and press Del. In the case of a block, you can alternatively click the Delete command which is shown at the bottom of the block parameter editor.
Or to delete several blocks and/or wires at the same time, select them as described in Selecting blocks and wires and then press Del.