[request] labled markers, multiple marker sets for a map

[Rapante]

It would be great if markers could be labled (1,2,3,A,B,C etc).

Also, it would be really useful if the plugin would include parameters to call markers or sets thereof. That would eliminate the need to create a new map and respective markers, each time the very same map is used with different markers.

Currently there is way too much backend work required, which is cumbrous to article authors.