Google Maps API の仕様変更により編集方法が変わりました。
基本的には
{{#display_map:[座標]}}
というコードを埋め込むと地図が表示されます。
マーカーを一つ表示した地図の例
{{#display_map:35.600753 139.667300}}
地図を読み込み中...
{"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":false,"defzoom":14,"layers":["OpenStreetMap","\u5730\u7406\u9662\u5730\u56f3","\u5730\u7406\u9662\u5730\u56f3 \u5358\u8272","\u7a7a\u4e2d\u5199\u771f 1940s","\u7a7a\u4e2d\u5199\u771f"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"","title":"","link":"","lat":35.600753,"lon":139.6673,"icon":""}],"imageoverlays":null}
複数のマーカーを表示した地図の例
緯度・経度の間のコンマ（,）はあっても無くても構いません。複数の座標はセミコロン（;）で区切ります。
{{#display_map:
35.660391, 139.708787;
35.660055, 139.70887;
35.659406, 139.708838;
35.659813, 139.708865;
35.660458, 139.708913;
35.659081, 139.708736;
35.65921, 139.708942;
35.659393, 139.708988;
35.659811, 139.709018;
35.660155, 139.709007;
}}
地図を読み込み中...
{"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":false,"defzoom":14,"layers":["OpenStreetMap","\u5730\u7406\u9662\u5730\u56f3","\u5730\u7406\u9662\u5730\u56f3 \u5358\u8272","\u7a7a\u4e2d\u5199\u771f 1940s","\u7a7a\u4e2d\u5199\u771f"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"","title":"","link":"","lat":35.660391,"lon":139.708787,"icon":""},{"text":"","title":"","link":"","lat":35.660055,"lon":139.70887,"icon":""},{"text":"","title":"","link":"","lat":35.659406,"lon":139.708838,"icon":""},{"text":"","title":"","link":"","lat":35.659813,"lon":139.708865,"icon":""},{"text":"","title":"","link":"","lat":35.660458,"lon":139.708913,"icon":""},{"text":"","title":"","link":"","lat":35.659081,"lon":139.708736,"icon":""},{"text":"","title":"","link":"","lat":35.65921,"lon":139.708942,"icon":""},{"text":"","title":"","link":"","lat":35.659393,"lon":139.708988,"icon":""},{"text":"","title":"","link":"","lat":35.659811,"lon":139.709018,"icon":""},{"text":"","title":"","link":"","lat":35.660155,"lon":139.709007,"icon":""}],"imageoverlays":null}
色々とカスタマイズした地図の例
{{#display_map:
center=35.605753 139.667300|width=400|height=250|zoom=13|layers=地理院地図 単色,地理院地図|
35.600753 139.667300~その１~解説１~E.png~;
35.600753 139.657300~その２~解説２~Red-marker.png;
35.610753 139.677300~その３~解説３~Green-marker.png;
}}
地図を読み込み中...
{"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"400px","height":"250px","centre":{"text":"","title":"","link":"","lat":35.605753,"lon":139.6673,"icon":""},"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":13,"defzoom":14,"layers":["\u5730\u7406\u9662\u5730\u56f3 \u5358\u8272","\u5730\u7406\u9662\u5730\u56f3"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u305d\u306e\uff11\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u89e3\u8aac\uff11\n\u003C/p\u003E\u003C/div\u003E","title":"\u305d\u306e\uff11\n","link":"","lat":35.600753,"lon":139.6673,"icon":"/images/f/fa/E.png"},{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u305d\u306e\uff12\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u89e3\u8aac\uff12\n\u003C/p\u003E\u003C/div\u003E","title":"\u305d\u306e\uff12\n","link":"","lat":35.600753,"lon":139.6573,"icon":"/images/d/d2/Red-marker.png"},{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u305d\u306e\uff13\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u89e3\u8aac\uff13\n\u003C/p\u003E\u003C/div\u003E","title":"\u305d\u306e\uff13\n","link":"","lat":35.610753,"lon":139.6773,"icon":"/images/b/be/Green-marker.png"}],"imageoverlays":null}
詳しい編集方法はMaps for MediaWikiの Leaflet maps に関する項目を参照してください。