There are not too many things that can go wrong with SuperDiff. If I get any questions I will add them to a FAQ section but at the moment nobody has used SuperDiff so the only question I have is 'what is SuperDiff?'

Instruction - download, install accepting the defaults then run it.

Currently the program has been tested on Windows 7, 8.1 and 10.  There is no Mac program.

You can use your number pad on the keyboard, you can use your mouse to click the onscreen buttons or you can use an additional USB (or wireless if you like) numberpad positioned where you like.  Note, each button onscreen has an assigned key on the keypad - you can see which key it is as there is a greyed out image in the corner of each button.  I have tried to make it logical and ergonomic.

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The custom button allows you to write your own name for the buttons and you can also choose whether they appear or not.  All pretty simple and self explanatory.