This section covers some of the not so obvious features of the user interface.
To scroll the displayed page 'proportionally' using the mouse
position the mouse pointer on the page, press the left mouse button, move the mouse, release the left mouse button.To scroll it 'absolutely' using the mouse
position the mouse pointer on the page, press the left button, press the third mouse button, move the mouse, release the third mouse button, release the left mouse button.Alternatively the arrow keys may be used to scroll the main window.
Similarly, to scroll the file lists shown in the file selection box using the mouse
position the mouse pointer on the list, press the left mouse button, move the mouse, release the left mouse button.Alternatively, clicking with the second mouse button in the upper/lower half of the list scrolls the list up/down page by page.