@openstreetmap/id-tagging-schema/data/presets/waterway/milestone.json

The OpenStreetMap tagging model used by the iD editor

{
    "icon": "temaki-milestone",
    "fields": [
        "distance",
        "direction_vertex"
    ],
    "moreFields": [
        "seamark/type"
    ],
    "geometry": [
        "point",
        "vertex"
    ],
    "tags": {
        "waterway": "milestone"
    },
    "terms": [
        "milestone",
        "marker"
    ],
    "name": "Waterway Milestone"
}