-Q2.C.9- avoid that 'bad geometry "+0+0": expected widthxheight' error message?

From: -II-  Tk Questions and Answers - How can I:

A2.C.9.  This usually means that you have an X11 resource set that looks
like:
	*geometry: +0+0
or
	Tk*geometry: +0+0

Tk doesn't like this, so either remove it or fully specify the resource
in the form:
	widthxheight{+-}xoffset{+-}yoffset
such as
	Tk*geometry: 200x200+0+0

Parent document is top of "FAQ: comp.lang.tcl Tk Toolkit Usage Questions And Answers (1/1)"
Previous document is "-Q2.C.8- bind the ResizeRequest event?"
Next document is "-Q2.C.10- ignore "send"s from other applications?"