Custom mode documentation excludes key information regarding 'active' and 'inactive' states of drawn features

[dh-jburke]

I've just lot quite a bit of time for something that could be better explained within the Custom Mode documentation.

I've created a custom mode for drawing nodes and lines, and I wanted the "active" styling that is used in the pre-determined modes to be usable as well.

The documentation mentions that using this.select will control which features are selected, which does work internally, but does not control the 'active' state on the drawn features. I had to dig through the un-minified MapDraw file to discover that the 'active' state is actually to be controlled manually within the toDisplayFeatures, like so:

DrawLineMode.toDisplayFeatures = function(state, geojson, display) {
    geojson.properties.active = !!this.isSelected(geojson.properties.id) + '';
    display(geojson);
};

It's a simple bit of code obviously, however the documentation could do with a note that the active property in the drawn GeoJSON is to be manually controlled within the custom mode, and isn't actually related to the selected states.

[Quietly-20201113]

How can I use js externally to set a point in a line to an active state?