You can record the current viewpoint and edit option when you press F5-8 keys with pressing the Shift key and go back to the recorded data when you press F5-8 keys without pressing the Shift key.
When [Select] command is active and 'S' key (is a shortcut key for the command) is pressed, an optional operation in the Select command is changed. And it is same as other commands (like as 'W' key for [Edge] command).
Mouse operation
A viewpoint is rotated by dragging a right button in the view. And the view is zoomed by pressing a left button while dragging a right button.
A view is rotated along a Y axis by dragging a right button with Shift key in the view. And a view is rotated along an eye direction by dragging a right button with Ctrl key.
When you click the right side of the mouse with moving vertex in [Move] command, you can join it with the vertex existing there.
When you drag up or down on the spin button beside a numerical input area, a number can be changed by an offset of a dragging.
When you click [View panel] menu with Shift key in the menu shown by button in [View header], the view is restored to an initial state.
When you right-click button in [View header], a simple display for a patch, a mirroring, a lathe and a blob are switched independently.
Menu
All objects are frozen if you select with pressing the Shift key in [Freeze].
About materials
When you set up materials, the new picture file is created if you input a file name which does not exist with an extension in the column of the file name of mapping image.