This is a work in progress, but additional mouse commands could be added:

• middle-click-drag to zoom into a rectangle
• SHIFT + left-click-drag to zoom into a rectangle
• SHIFT + left-click to auto-axis
• CTRL + left-click-drag to pan horizontally (vertical axis locked)
• CTRL + right-click-drag to zoom horizontally (vertical axis locked)
• make CTRL+scrollwheel zoom horizontally (vertical axis locked)
• ALT + left-click-drag to pan vertically (horizontal axis locked)
• ALT + right-click-drag to zoom vertically (horizontal axis locked)
• make ALT+scrollwheel zoom on one axis only zoom vertically (horizontal axis locked)
• document all these commands through the right-click menu