The library manager in Cadence is central window in which all your different cells and views are organized. There are three columns; the Library column contain very broad categories (such as an entire collection of standard cells), the Cell column contain a Standard cell or device, and the View column list all the different views and formats of the standard cell. One can think of it as the a file manager for Cadence.
From here one can create, delete and open libraries, cells and views.
Cadence is a trademark of Cadence Design Systems, Inc., 555 River Oaks Parkway, San Jose, CA 95134
Synopsys is a trademark of Synopsys Inc, 700 East Middlefield Rd. Mountain View, CA 94043