The Properties toolbar looks like any other toolbar and can be moved, docked, or floated in the same way. It also contains buttons and can be hidden or displayed by choosing it by name from the View > Toolbars menu.
The buttons on the Properties toolbar display properties of the currently selected tool or object. Unlike buttons on most toolbars, the buttons on the Properties toolbar can’t be hidden. Also, many of the buttons merely display information, so you cannot use them to make changes to the PDF.