Discover Devices - Re-scans for all Art-Net devices in the network [menu Devices > Discover Devices].

Pause Monitoring - Stops sending out RDM queries [menu Devices > Pause Monitoring].

Identify All Devices - Activates the identification mode for all devices that are listed in the list of devices [menu Devices > Identify All Devices (Set:IdentifyDevice)]. [It should also work for fixtures that haven't had their parameter scanned yet or may be able to listen but not be able to respond to requests.]

Stop Identifying All Devices - Deactivates the identification mode for all devices that are listed in the list of devices [menu Devices > Stop Identifying All Devices (Set:IdentifyDevice)].

Patch Editor - Opens the window of the Patch Editor [menu Devices > Patch Editor...].

The toolbar is located at the top of the application window by default.
Use drag & drop on the drag-handle with the help of your mouse to re-position it to the outer left, outer right, or bottom of the application window.