> Maybe I am missing something. We are talking about schematic
> capture, right? Why would you even need to control placement of
> schematic symbol pins to 1 mil?
This is an interesting point.
The ability to turn the snap-to-grid on/off exists since there are
situations where you want to draw lines and place text using a much
finer grid than you can get with a 100x100 grid. For example,
consider drawing triangular op-amps. It's hard to make them look good
when the grid is turned on.
Or a switch matrix when the pins are at 45 degree angles ;-)