Magnifying Lens
Main Menu: View >
Magnifying Lens
Shortcut: Ctrl-M
This command opens the Magnifying Lens window, which displays the image area around the cursor position in a separate window with zoom selectable from 4 to 20x.
The M button turns on and off displaying the Measurements layer in the Magnifying Lens window.
The > button enlarges or reduces the Magnifying Lens window size.