Back when I had my Apple /// (early 1980s), I wrote a program in UCSD Pascal that displayed a calendar on the right side of the screen and a clock on the left. This was all in graphics mode, of course.
I am trying to recreate this program on my Apple //e. It's not hard, technically, except for one thing: I don't recall how I was able to print numbers on the clock and the dates inside the grid of the calendar.
The TURTLEGRAPHICS unit doesn't seem to have any ability to write text on the screen in graphics mode.
Now, I'm almost certain this is a native ability of the UCSD P-system, but damned if I can remember how to do it. None of the manuals I've looked at mention it.
I suppose it's possible either that this feature was unique to the SOS version of the P System that formed the ///'s operating system, or perhaps it was a third party unit that I was using.
Does anyone remember?