Possible to put text on minimap via custom entity?

[aubergine18]

Is there any way for a custom entity to add text (or icon?) to map overview (eg. the one you get when pressing M key) like a train stop? I can think of a few crufty ways to implement this with current API features, but would prefer to have a more streamlined method to avoid adding invisible assets. Ideally, I'd want a way to control whether the text appears on the map overview or not (only when my entity is 'activated', the text would appear on the map overview).

[Supercheese]

Sadly I think you're limited to using an invisible Train Stop.