With Word especially (and probably with any software approaching anything that can be viewed as professional) the long tail is unbelievably long, and "users only care about 20% of your application" may actually become "users may only care about 20% where no two users share the same 20%". Here's Microsoft's own research on it from an era when people were actually doing research: https://web.archive.org/web/20080329042649/http://blogs.msdn...
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Beyond the top 10 commands or so, however, the curve flattens out considerably. The percentage difference in usage between the #100 command ("Accept Change") and the #400 command ("Reset Picture") is about the same in difference between #1 and #11 ("Change Font Size")
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Beyond the top 10 commands or so, however, the curve flattens out considerably. The percentage difference in usage between the #100 command ("Accept Change") and the #400 command ("Reset Picture") is about the same in difference between #1 and #11 ("Change Font Size")
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The whole series is great: https://web.archive.org/web/20080316101025/http://blogs.msdn... and there's a presentation, too: https://www.youtube.com/watch?v=AHiNeUTgGkk