AFRAME.registerComponent('helloworld', {
  schema: { 

  },
  dependencies:{
    "iso":          "https://rawgit.com/Utopiah/reponame/master/dist/file.min.js",  // fallback URL for xrsh in case component 
    "xterm":        "https://rawgit.com/Utopiah/reponame/master/dist/file.min.js",  // was not loaded (in AFRAME.components)
    "content-menu": "https://rawgit.com/Utopiah/reponame/master/dist/file.min.js",  // TIP: include branch/commit in URL to lock specify version
  },
  events:{

    "iso":   function(tty){// act when component gets mounted 
      // 'term' is basically AFRAME.components.ISOterminal
      tty.write('hello to tty ISO-os from AFRAME')
      tty.on('stdout', (data) => {
        // react to data being spoken/typed into the terminal
        // (spatial prompting like 'open foo.gltf', 'component helloworld' e.g.)
      })
    },

    "xterm":   function(xterm){// act when component gets mounted 
      // 'term' is basically AFRAME.components.ISOterminal
    },

    "content-menu": function(menu){
      menu.add({
        name: 'edit',         // "everything must have an edit-button" ~ Fabien Benetou
        icon: 'gear',         // see https://jsonforms.io to see json-2-html forms                   
        type: 'object',       // json-2-webxr has nothing like it (yet) but offers uniform interfaces across components 
        properties:{           
          enabled:        { type: 'boolean',  default: true, format: 'checkbox' },
          edit_terminal:  { type: 'function', cb: () => AFRAME.components.ISOterminal.exec('pico /com/helloworld.js') },
          edit_spatial:   { type: 'function', cb: () => this.require({"spatial-edit":{required:true}})                }
        }
      })
    }
  },

  init: function () {  },

  manifest: { // HTML5 manifest to identify app to xrsh
    "short_name": "Hello world",
    "name": "Hello world",
    "icons": [
      {
        "src": "/images/icons-vector.svg",
        "type": "image/svg+xml",
        "sizes": "512x512"
      }
    ],
    "id": "/?source=pwa",
    "start_url": "/?source=pwa",
    "background_color": "#3367D6",
    "display": "standalone",
    "scope": "/",
    "theme_color": "#3367D6",
    "shortcuts": [
      {
        "name": "How are you today?",
        "short_name": "Today",
        "description": "View weather information for today",
        "url": "/today?source=pwa",
        "icons": [{ "src": "/images/today.png", "sizes": "192x192" }]
      },
      {
        "name": "How's weather tomorrow?",
        "short_name": "Tomorrow",
        "description": "View weather information for tomorrow",
        "url": "/tomorrow?source=pwa",
        "icons": [{ "src": "/images/tomorrow.png", "sizes": "192x192" }]
      }
    ],
    "description": "Hello world information",
    "screenshots": [
      {
        "src": "/images/screenshot1.png",
        "type": "image/png",
        "sizes": "540x720",
        "form_factor": "narrow"
      }
    ],
    "help":`
Helloworld application 

This is a help file which describes the application.
It will be rendered thru troika text, and will contain
headers based on non-punctualized lines separated by linebreaks,
in above's case "\nHelloworld application\n" will qualify as header.
    `
  }

});