Wikimedia edition code, e.g. `en`, `de`, `ja`, `simple` or `zh-min-nan`. Default: `en`.

Latitude, -90 to 90. Must be paired with `lon`.

Longitude, -180 to 180. Must be paired with `lat`.

Page whose coordinates to search around, instead of `lat`/`lon`.

Radius in metres, 10 to 10,000. Default: 10,000.

Results to return, 1 to 500. Default: 50. The answer is the nearest results up to this number; there is no continuation.