According to NC documentation https://docs.nextcloud.com/server/20/admin_manual/configuration_server/occ_command.html there is no OCC command for deleting / removing a calendar.

Is your feature request related to a problem? Please describe.
Feature request not related to a problem, at least not to a known problem.

Describe the solution you'd like

1. Provide an OCC command for delet

It's very important for me for the text to be clearly visible when added to a screenshot. This is usually easily achieved by using black text with white background or white text with black background - but other colours usually look good with either (except maybe for very dark and very light colours).
I know that usually the implementations involve:

• Creating a shadow
• Creating a border

I

I like how Simplepush presents a couple of different ways to generate push messages on their website:

https://simplepush.io/#libraries

How about having a similar feature directly in the server GUI? That would include the bits documented here https://gotify.net/docs/pushmsg