Hi, I am a noob who started learning the Mathematica today, so I am sorry for my messy code.
I found that the first graph (without the callout) keeps the transparent background just fine when I copy that to the OneNote. However, drop the callout in, and the copied image does not have a transparent background, as you can see in my OneNote screenshot.
I am so clueless and at the same time so curious. I would appreciate any help on this issue or feedback on my work.
Thank you in advance.
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