All menu items in the PDF Snipping Tool software are illustrated here.
If you have a good memory, you can remember the hot keys for the frequently used operations, such as Ctrl+O, Ctrl+S, Ctrl+C, Ctrl+X, Ctrl+I. You can change the hotkey definitions if you have better ideas.
Options->Silent Mode, Windows->Menu Bar, Windows->Tool Bar, Windows->Status Bar, Windows->Maximize Main Window, Window->Maximize Preview Window are all checkable options. When you check any of them, it shows checked; otherwise it shows unchecked.