With this code, you can automatically create dots at a perfectly straight angle between the two nodes you have selected. You can align it in X to the top or the bottom node, depending on what you want. It doesn't matter the order of your selection. For X aligned to the bottom node of my selection I use ctrl+., and for X aligned to the top node I use shift+..
This code is particularly useful when you are connecting nodes that are far away in the Node Graph.
Expand Auto Dot