To Delete a Cable Symbol
1. Select the cable symbol or symbols you want to delete.
2. Click Edit > Delete.
or
Select the cable symbols, right-click, and select Delete from the shortcut menu. The selected cable symbol or symbols are deleted.
3. To restore the deleted cable symbols, click Edit > Undelete or right-click and select Undelete from the shortcut menu.
* 
Deleted objects are restored only if you perform an Undelete operation immediately after a Delete operation.
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