As a result of the suggestion above from @FiroLFO, there is now a:
- format for modules to send a receive text along a cable (Tipsy).
- Support in BASICally for sending text messages.
- A module (TTY) for displaying received text messages.
Details and links in this post. Or watch this video to see it all in action.
Thanks again to @baconpaul and @pachde for encouraging and materially contributing to this idea.