One of the most useful parts of VTT is map pins. Eg location C1 is actually a link that brings you to or pops open a window display the information about that location.
I know demiplane is not a VTT, but I think it could benefit from this format of interaction. For example, if you’re reading the location description for area C3, it would be helpful to be able to hover or click on C3 to see the map again, instead of scrolling up and losing my place.
Alternatively, having a small always-on-top window that displays the map in a corner of the screen might be useful.
Basically any way to reference the map while reading without scrolling.