Excellent info Brad!
I created:-
*POSX,Position0.02
A,CIRCLE .5,.5,.3
A,LINE .1,.5,.9,.5
A,LINE .5,.1,.5,.9
A,LINE 0,0,0,1
A,LINE 0,0,4.5,0
A,LINE 0,1,4.5,1
A,LINE 1,0,1,1
A,LINE 4.5,0,4.5,1
A,CIRCLE 1.5,.5,.3
A,LINE 1.4,.1,1.7,.9
A,TEXT 3.2,0.5,0.02
Which can be put into a hole table cell for jig bored holes.
Is it possible to network my modified Gtol.sym?