How to stop a line snapping to object in Omnigraffle?
 

I've never used this program before, but here are 2 solutions that work with other software:Somewhere in your Upper Drop-down Menus, there is a switch called 'Snap to Point', and it is active. If you click on it, it will become unactive.

...or you could just hold down the OPTION key while drawing the line.

Little excess at the end of a line
 

So I have learned about shift and option keys while line drawing from other posts in the forum. Very helpful. But what about this?

When I draw a line often I get a little 90 degree bend at the start or end of the line because my trackpad is very sensitive and my finger moves slightly up or down when I double click to release the line.

What can be done to have OG disregard that movement?

Cheers