Most often, ID numbers (IDs) for geometric entities are chosen and assigned automatically. The Renumber Action permits the IDs of points, curves, surfaces, solids, planes, or vectors to be changed. This capability is useful to:

IDs must be positive integers. Duplicate IDs are not permitted in the List of New IDs, or in the selected Entity List (old IDs). A Starting ID or a List of New IDs may be entered in the input databox. If a geometric entity outside the list of entities being renumbered is using the new ID, the renumber process will print a warning message stating which ID is already in use and proceed to use the next highest avaliable ID since each entity must have a unique ID. The default is to renumber all the existing entities beginning with the minimum ID through the maximum ID consecutively starting with 1.

If only one ID is entered, it is assumed to be the starting ID. The entities will be renumbered consecutively beginning with the starting ID.

If more than one ID is entered and there are fewer IDs in the List of New IDs than there are valid entities in the selected Entity List, renumbering will use the IDs provided and when the list is exhausted, the next highest available ID will be used thereafter to complete the renumbering. The List of New IDs may contain a # signifying to use the maximum ID + 1 as the Starting ID. However, the list may have more IDs than needed.

The IDs in the selected Entity List may contain a #. The value of the maximum existing ID is automatically substituted for the #. There may be gaps of nonexisting entities in the list but there must be at least one valid entity ID in order for renumbering to take place.

A percent complete form shows the status of the renumber process. When renumbering is complete, a report appears in the command line indicating the number of entities renumbered and their new IDs. The renumber process may be halted at any time by pressing the Abort button and the old IDs will be restored.