Hi, I was trying to call chart.Posn. I ran into an unusual problem. It complains that: Error in strheight(axt): X11 font -adobe-helvetica-%s-%s-*-*-%d-*-*-*-*..., face 1 at size 11 could not be loaded. I am wondering how to fix this? It seems something is missing from X11 device but I don't know what exactly to install. Thank you. Robert [[alternative HTML version deleted]]