Using Omnigraffle

[Howard Kaufman]

I am considering buying Omnigraffle for my work which consists of drawing 
simple block diagrams and electronic schematics.  (I stress the word simple)
.  One problem I have is that where lines intersect I sometimes need to 
place a small black dot.  (This indicates that there is an electrical 
connection between the 2 lines.  If the lines cross without the dot then it 
usually means the lines are just crossing on the page, but not electrically 
connected).  The problem is that the lines are drawn to the grid but when 
I create a small circle (about 1/4 the size of a grid box) I cannot place 
it so that the center of the dot sits exactly at the intersection of the 
lines (which is the same thing as the intersection of the grid lines).  Any 
ideas as to how to do this, other than turning off snap to grid and nudging?
   BTW, nudging may not help, because it is not fine enough, I have found.

Regards,
Howard Kaufman
Lectrosonics
(516) 785-6211