Thanks, guys.  I'm glad this has been useful in some way.  Special thanks, Daremok3, for the kind and insightful comment.  I'll have to download the screencast keys addon and try it out again.  I know that in Blender 2.74, the integrated feature had been removed, because it wasn't performing properly, and often recorded keystrokes that weren't accurate, or misinterpreted certain keys.  However, perhaps the addon has been improved since then, so I'll see how it works. If there's some external tool for recording screenkeys that is more reliable, I'd be interested in using that.  In the meantime, I'll try to verbally mention all the keys I'm using more consistently in my narrations.  Good tip, thank you.

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