'Transparency' allows you to set the window transparency, either to a predefined figure (100%, 90%, 80% etc) or whatever other value you define. If you'd like it to be 1200x800 pixels for a screenshot, say, just choose it from the list, or manually enter whatever width and height figures you require.
'Resize' allows you to set the window to a precise size. Choose the option again to turn this off. 'Always On Top' sets the window to float above all others, so it's always visible. Most are aimed at developers (Handle, Class, Style), but the Process tab highlights the full path of its executable, handy if you need to know where it's stored. 'Information' displays various details about the window and its process. SmartSystemMenu is a small, open-source tool which adds five useful functions to your window system menu (as displayed when you click the window's top-left corner).
