🚀 go-pugleaf

I redefined some text mode characters.  One is like ASCII 196 (a long
"hyphen" that stretchs the length of the character cell) but is
supposed to occupy only the bottom row of the definition (unlike 196
which, roughly, lies on the middle row).

But one of the end columns won't display--resulting in a dashed, instead
of solid, line when I write a string of these.

I dimly recall that only certain charcters can be defined as line
characters, but I've tried redefining 184, 189, and 190 and none of
them work.

Thnaks for any help.

-alan mead