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When I try to draw a line on an image using Preview's annotation tools, it doesn't remain as I drew it but instead the line is drawn linear. How can I set it to be preset as nonlinear?

So looking to the images, I don't want it to be set like this:

Linear

Instead I want it to be preset in this way, instead of clicking the actual function everytime to make it nonlinear.

Non Linear

1

It's currently not possible to disable the shape detection used by default in the markup tools.

If your drawing is recognized as a standard shape, it’s replaced by that shape; to use your drawing instead, choose it from the palette that’s shown.

https://support.apple.com/kb/PH20218

You can provide feedback to Apple here:

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