Introduction - Mark My Screen

Hotkey

Toggle drawing mode using the hotkey: Ctrl + § (above Tab, left of 1).

System tray

Start drawing directly or show the toolbar.

Live mode

When not drawing you can fully interact with all other programs on your computer.
All drawings can be clicked though to access your program below.

Mouse highlight

Highlights you mouse cursor position and mouse clicks(left, middle, right).
Turn off in options.
Change size using the wheel on the toolbar or Alt + Mouse wheel

Show keys

Shows on the screen all the keys you press.

Enable in options.

Drawing

Toolbar

Switch to drawing using the shape button. Arrow exits drawing mode.

Mouse wheel

Use the mouse wheel on the toolbar buttons to change:
Arrow: highlight size
Shapes: draw width
Color: Drawing transparency
Background: Background transparency

Keyboard shortcuts

1 Freehand
2 Line
3 Numbered markers
4 Rectangle
8 Ellipse

Draw color: C, Color key (Example: C, R = red, C, G = green, click the toolbar for all available colors).

Draw width: W, 0-9 (or use the mouse wheel)

Ctrl + Z Undo last drawn shape.

Ctrl + E Erase all.

Esc Clear and exit drawing mode.

Background

The background can be fully transparent, to mark up the content behind, or semi-transparent to focus on your drawing.

Background color: B, Color key

Examples:
B, R for red,
B, G for green,
B, B for blue,

Background opacity: O, 0 - 9.

Options

Press Ctrl + O to open the options, or open it from the system tray icon.