Dan: Very cool, thank you for letting me know! You should be able to insert a screenshot with the above far right icon.
Ummmm… Perhaps I need better spectacles, but it seems the only way to insert images is to use the LINK in Text mode or the Image icon in Visual Mode. Both of those require the use of an external server like Imgur or Dropbox. (If using Dropbox, change the “…dl=0” to “…dl=1” so the post can run off and get it to display.)
I am not sure WordPress does “hosted” images 🙁
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Understanding the scope of the problem is the first step on the path to true panic. [Florence Ambrose, "Freefall"]