lens – interactive screen magnifier
presents a magnified view in its window of an arbitrary area on the screen.
The default magnification is 4 (showing each pixel as a 4×4 pixel block in
window). This may be changed by typing a digit on the keyboard (with
standing for 10), or by using the
keys to increase or decrease the magnification by one unit.
The lower limit is ×1; the upper ×16.
The interface to indicate what area to magnify is dictated by the mouse multiplexing rules of
Start by pressing mouse button 1 in the
window and dragging, with the button pressed, to the center of the area to magnify.
will update the display as the mouse moves.
Releasing the button freezes the
The magnified view is statica snapshot, not a moviebut typing a space or
key in the
window will refresh the
display, as will changing the magnification.
To make counting pixels easier, typing a
toggles whether a checkerboard grid is imposed on the magnified area.
Button 3 brings up a menu of actions.
There should be an easier way to indicate what to magnify.