The Delete tool class has only one element. It allows you to permanently delete words and arrows from the model. For arrows the causality they imply will be removed, invalidating equations. For variables these will be deleted from the model and all views invalidating the equations for any variables that used them.
Select the Delete tool and click on the word you want to delete or the arrowhead of the arrow you want to delete. If you delete a shadow variable this will also delete any non-shadow instances of the same variable.
If you delete a word that has arrows coming into it, those arrows will be deleted. Any Shadow variables connected to the arrows will be removed from the view, but they will not be deleted from the model.
NOTEDeletion changes model structure. It should be done carefully to avoid mistakes.