Hi,
first of all, thanks for doing a great job in supporting your users.
I found a site that has text on it that only loads if you mark it and scroll it. it is not even in the source-code initially. Do you have any idea how that works and how I could do this also?
Not sure if I fully understand. Can you link me to the example page in question?
This wouldn’t be a request we can provide a full custom solution for either so I’d recommend posting the question in a WP general forum like this: https://wordpress.stackexchange.com/