When writing text on a graphics screen, using Grx20, the (col,row) positioning
system doesn't work as described in the header files. It's more like a 
(row,col) positioning. I tried downloading the 960919 alpha image of 
grx20.zip but the error was still there.

In file dumptext.c go to about line 59 where you'll find the following code:

	xpos = r->txr_xpos + (row * chrw);
	ypos = r->txr_ypos + (col * chrh);

change it to

	xpos = r->txr_xpos + (col * chrw);
	ypos = r->txr_ypos + (row * chrh);

Not a DJGPP bug, so it doesn't belong here.