It may just be my OCD, but I like straight lines in my flow. One easy way to make this happen is to click over to the Common tab on your nodes and set the X and Y coordinates for where it is positioned on your canvas.
Another feature of the Common tab is the Description text area. This is useful if you like to comment the use of the node. I've heard people complain that you can't add comments to your 'programming' in IPA and I simply point them to the Description area on both the canvas (white space) properties and within each node.
Not just answers, providing solutions