The Delete command deletes all selected entities and any child entities associated with them. For example, if you delete a trimming curve, the trimmed surface will also be deleted. When deleting a database model entity, the quilts which are a part of the model will also be deleted. Use the Split command if you wish to break apart a model. Note that in some cases, it may be necessary to use the Show Hidden command in order to view quilt parent entities which are not automatically deleted.