The database is ready to use, and contains all the tables, forms, reports, queries, macros, and relationships that you need to start working. Deleting an individual Symbol from a Symbol Library, however, deletes it permanently. You can add notes to both your Symbols and Symbol Libraries in the Properties panel on the right. The driver package contains several files: USBApplication1.inf is an information file that Windows uses when you install the driver, usbapplication1.cat is a catalog file that the installer uses to verify the test signature for the driver package. They make it easy to standardize a series of maps for different projects, and ensure the correct layers are immediately available for everyone to use in their maps.