    /* Overpass samples taken from
       https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_QL
       https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_API_by_Example

    */

    // single line comment with TODO alerts

    /* multi-line comment with ### alerts */

    [out:json][timeout:25];
    // gather results
    (
      // query part for: “amenity=post_box”
      node["amenity"="post_box"](52.0, 13.0, 54.0, 13.5);
      way["amenity"="post_box"]({{bbox}});
      relation["amenity"="post_box"]({{bbox}});
    );
    // print results
    out body;
    >;
    out skel qt;

    [out:csv(::type, "de:regionalschluessel", name,
             ::count, ::"count:nodes", ::"count:ways", ::"count:relations")];

    //All areas with regional key (German: "Regionalschlüssel") starting with 057
    area["de:regionalschluessel"~"^057"];

    // Count the pharmacies in each area
    foreach->.regio(
      // display details for the current area
      .regio out;

      // Collect all Nodes, Ways and Relations with amenity=pharmacy in the current area
      ( node(area.regio)[amenity=pharmacy];
        way(area.regio)[amenity=pharmacy];
        rel(area.regio)[amenity=pharmacy];);

    // Count the elements in the current area Area
      out count;
    );

    [timeout:300]
    [bbox:51.08282186160976,-12.8759765625,55.986091533808384,-1.86767578125]
    [out:csv(::id, ::type, name, "name:en", "name:ga")];

    ( node[name]["name:en"]["name:ga"](if:(t["name"] != t["name:en"]) && (t["name"] != t["name:ga"]));
      way[name]["name:en"]["name:ga"] (if:(t["name"] != t["name:en"]) && (t["name"] != t["name:ga"]));
      rel[name]["name:en"]["name:ga"] (if:(t["name"] != t["name:en"]) && (t["name"] != t["name:ga"]));
    );
    out;

    [out:csv(version,timestamp,changeset,count)];
    timeline(relation,2632934);
    for (t["created"])
    {
      retro(_.val)
      {
        rel(2632934);
        make stat version=u(version()),timestamp=u(timestamp()),changeset=u(changeset()),count=u(count_members());
        out;
      }
    }

    [timeout:60];
    area["name"="Mayenne"]->.boundaryarea;
    way(area.boundaryarea)["building"="church"];
      foreach(
        node(w)->.d;                                     // determine all nodes of a way
        .n is_in->.a;
        area.a[name][boundary=administrative][admin_level~"^[2-8]$"] -> .a;
        out center;
        convert way ::=::,
                  ::id = id(),
                  is_in=a.set("{" + t["admin_level"] + ":" + t["name"] + "}");

        out;
    );