Manual Mesh Editing - Delete All Free Nodes

To delete all free nodes right click on Mesh and select Delete All Free Nodes form the Edit menu.  This will automatically select and delete all free nodes.

Below is an illustration of a mesh with free nodes.

Below is an illustration of a mesh with the free nodes deleted.

You can also delete free nodes one at a time or by selecting multiple free nodes.  To delete free nodes press the selection filter icon and enable the Select Nodes filter.  Select the node(s) to be deleted and press the Delete key or right click and select Delete from the menu.  Multiple nodes can be selected by holding the Ctrl key or by window selection. 

NOTE:  You can only delete free nodes.  Nodes contained in an element cannot be deleted.