Thanks for the persistent pages. I can try them today or tomorrow.
Regarding showing one module multiple times: I do not want to put e.g. “clock” multiple times into the config.js and show it in different places on the screen.
My idea was - and I hope that I got the concept right - that if the same module (which is implemented only once in the config.js and calls the API only once) could be shown multiple times on one page. Then I could set multiple name-tags for that module and address each representation of this module separately via the name-tag in the custom.css file and show/hide/scale different parts of the module at different locations on the screen. This could be of general use for other people as well.
My next step after this would be to learn how to inject css info dynamically - e.g. to keep infos about my upcoming trains/flights, the traffic-map to the station and weather info at my destination at the same visual size as I move throughout the room. This I would like to achieve with a distance measurement via PIR or doppler-microwave-sensor.
I hope this helps to explain the idea I had.