{
  "title":"Custom protocol handling",
  "description":"Method of allowing a webpage to handle a given protocol using `navigator.registerProtocolHandler`. This allows certain URLs to be opened by a given web application, for example `mailto:` addresses can be opened by a webmail client.",
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      "url":"https://developer.mozilla.org/en-US/docs/Web/API/Navigator/registerProtocolHandler",
      "title":"MDN Web Docs - Register protocol handler"
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  "notes":"",
  "notes_by_num":{
    "1":"Supports protocols `mailto`, `mms`, `nntp`, `rtsp`, and `webcal` but requires custom protocols to start with `web+`"
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}