Thanks! I tried everything but type a space. Doh!
There's still another question related to plugin help and TakeCommand.
Briefly, does TakeCommand handle alternate console screen buffers better than it did a decade or so ago?
I ask because my plugins handle F1 help differently in TCC and TCMD. In TCC I present the F1 help in an alternate screen buffer, pause, and switch back to the original screen buffer. In TCMD I was saving the console screen buffer, emptying it, writing the help, pausing, and and re-writing the saved text. But now the alternate buffer method also works in TCMD. That makes me think the alternate buffer didn't work once upon a time. [Or maybe I was misguided from the beginning.]