Drawing line with rounded corners?

[Intbel]

This you may find useful when using the shape editor tool.

When pulling the red handle thingoe, if you hold down the ctrl key while doing so, you can constrain it to 100% horizontal/vertical.

So if you do this with both handles on a curve and put one exactly (zoom right in for 100% accuracy) on top of the other you will have a perfect curve on your corner.

Not a good explanation, so see attached image which should simplify things.

P.S. You can also use this method to get your curves right after re-sizing a rectangle with curved corners.