CalPolygardener said: The tiny little spots, yes. The bigger blotches and squiggles, no. The squiggles look a lot like leafminers but not. The blotches look more like sunburn or chemical burn. You've probably controlled whatever it was. Watch for new damage in case you haven't.
Thanks for your thoughts.
I had wondered if it was another insect, but all I saw were tiny dots. I also liked for tracks in the leaves but could not see any.
I also wondered about sun exposure. I'd be surprised if it was too much sun, as the sun does not even shine in through the window for 6 hours or so.
Anyway I did treat the plant with insecticidal soap, and am keeping it under observation. So I will see what happens.
Thanks again.