在很多国外的IT教学视频中，常见的代码区域放大，屏幕画笔等“高级”操作，就是用的ZoomIt.
一款技术演示的屏幕缩放和批注工具。
下载地址：docs.microsoft.com/zh-cn/sysinternals/downloads/zoomit
Shortcuts
| Function | Shortcut |
|---|---|
| Zoom Mode | Ctrl + 1 |
| Zoom In | Mouse Scroll Up or Up Arrow |
| Zoom Out | Mouse Scroll Down or Down Arrow |
| Start Drawing (While In Zoom Mode) | Left-Click |
| Stop Drawing (While In Zoom Mode) | Right-Click |
| Start Drawing (While Not In Zoom Mode) | Ctrl + 2 |
| Increase/Decrease Line And Cursor Size (Drawing Mode) | Ctrl + Mouse Scroll Up/Down or Arrow Keys |
| Center The Cursor (Drawing Mode) | Space Bar |
| Whiteboard (Drawing Mode) | W |
| Blackboard (Drawing Mode) | K |
| Type in Text | T |
| Increase/Decrease Font Size (Typing Mode) | Ctrl + Mouse Scroll Up/Down or Arrow Keys |
| Red Pen | R |
| Green Pen | G |
| Blue Pen | B |
| Yellow Pen | Y |
| Orange Pen | O |
| Pink Pen | P |
| Draw a Straight Line | Hold Shift |
| Draw a Rectangle | Hold Ctrl |
| Draw an Ellipse | Hold Tab |
| Draw an Arrow | Hold Ctrl + Shift |
| Erase Last Drawing | Ctrl + Z |
| Erase All Drawings | E |
| Copy Screenshot to Clipboard | Ctrl + C |
| Save Screenshot as PNG | Ctrl + S |
| Show Countdown Timer | Ctrl + 3 |
| Increase/Decrease Time | Ctrl + Mouse Scroll Up/Down or Arrow Keys |
| Minimize Timer (Without Pausing It) | Alt + Tab |
| Show Timer When Minimized | Left-Click On The ZoomIt Icon |
| Live Zoom Mode | Ctrl + 4 |
| Exit | Esc or Right-Click |