function Docs () {
  this.export = function () {
    var html = ''

    html += this.print_intro()

    html += '## Cursor\n'
    html += 'Include `$` in a query and click on the canvas to inject the cursor position in the query.\n'
    html += '- `$ click` inject a **Pos**.\n'
    html += '- `$+ click` inject a **Pos**, and append `$+` for multiple positions.\n'
    html += '- `$ shift click` inject a **Rect**.\n'
    html += '- `#$ click` inject a **Color**.\n'
    html += '- `x` swap **Color** with secondary.\n\n'
    html += '- `z` draw under render.\n\n'

    html += '## Modules\n'
    html += this.print_modules(ronin.modules)
    html += this.print_license()

    fs.writeFile('/Users/VillaMoirai/Github/HundredRabbits/Ronin/README.md', html, (err) => {
      if (err) { alert('An error ocurred creating the file ' + err.message) }
    })

    return html
  }

  this.print_intro = function () {
    html = '# Ronin\n'
    html += 'Ronin is a graphic design tool, to paint, resize and export graphics.\n\n'
    html += "<img src='https://raw.githubusercontent.com/hundredrabbits/Ronin/master/PREVIEW.jpg' width='600'/>\n\n"
    return html
  }

  this.print_modules = function (modules) {
    var html = ''

    for (module_name in modules) {
      var module = modules[module_name]
      html += '## ' + module_name + '\n\n'
      html += module.docs + '\n\n'
      html += this.print_methods(module.methods) + '\n'
    }
    return html + '\n'
  }

  this.print_methods = function (methods) {
    var html = '### Methods\n'

    for (method_name in methods) {
      var method = methods[method_name]
      html += '- `' + method_name + ':' + method.params + '` ' + method.info + '\n'
    }
    return html
  }

  this.print_license = function () {
    html = '## License\n'
    html += 'See the [LICENSE](LICENSE.md) file for license rights and limitations.\n'
    return html
  }
}