xzoom(1x) on Linux
The text cc25a57c5917, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it. The page shows this text now.
magnify part of the screen, with fast updates
Flags it lists
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-source -
-x -
-xy -
-y -
-z