Wow, didn't expect to see this on HN! Creator here, happy to answer any questions :)
I would typically need to quickly import calendar files related to the various online events I have to take part. And the planner should account for the differences in time zones, so that I do not have to.
https://helpx.adobe.com/acrobat/using/applying-actions-scrip...
Also search for "PDF JavaScript"...
BTW, the PDF do look sleek.
I thing I’m going to configure one and buy it.
How the annotations are stored depends on the device you use. I just exported my 2022 planner in the reMarkable app with annotations (been using this file since May) and it's 32MB. So not exactly slim, but not massive either.