I tried the first experiment in chapter 5 in the Metafontbook: ran
drawdot (35,70); showit;. This opened a window entitled
Metafont, but containing nothing. What's missing? Using TeXlive 2017 on Arch Linux.
PS. After adding
drawdot (65,70); showit; I see both dots.
PS II. Which have now disappeared, after I changed window manager workspace and back.