How to zoom part of screen with high contrast

High contrast option can be useful for the visual impaired people.
  1. Download free Screen Beagle application, install and run it.
  2. Click right mouse button over Screen Beagle's tray icon then click Preferences.
  3. Choose Medium or High in High Contrast group.
  4. Click right mouse button over Screen Beagle's tray icon then click Magnifier.
  5. Move mouse over screen to see zoomed image with high contrast.
  6. Click mouse buttons with Ctrl to zoom in and out and with Shift to change loupe size.
  7. Press Esc to defrost the screen.