namespace local = ""
default namespace ns1 = "http://www.topografix.com/GPX/1/1"

start =
  notAllowed
  | element gpx {
      attribute creator { xsd:string },
      attribute version { xsd:string "1.1" },
      element metadata {
        element name { \string }?,
        element desc { \string }?,
        element author {
          element name { \string }?,
          element email {
            attribute domain { xsd:string },
            attribute id { xsd:string }
          }?,
          element link { linkType }?
        }?,
        element copyright {
          attribute author { xsd:string },
          element year { xsd:gYear }?,
          element license { xsd:anyURI }?
        }?,
        element link { linkType }*,
        element time { dateTime }?,
        element keywords { \string }?,
        element bounds {
          attribute maxlon {
            xsd:decimal { minInclusive = "-180" maxExclusive = "180" }
          },
          attribute maxlat {
            xsd:decimal { minInclusive = "-90" maxInclusive = "90" }
          },
          attribute minlon {
            xsd:decimal { minInclusive = "-180" maxExclusive = "180" }
          },
          attribute minlat {
            xsd:decimal { minInclusive = "-90" maxInclusive = "90" }
          }
        }?,
        element extensions { extensionsType }?
      }?,
      element wpt { wptType }*,
      element rte {
        element name { \string }?,
        element cmt { \string }?,
        element desc { \string }?,
        element src { \string }?,
        element link { linkType }*,
        element number { nonNegativeInteger }?,
        element type { \string }?,
        element extensions { extensionsType }?,
        element rtept { wptType }*
      }*,
      element trk {
        element name { \string }?,
        element cmt { \string }?,
        element desc { \string }?,
        element src { \string }?,
        element link { linkType }*,
        element number { nonNegativeInteger }?,
        element type { \string }?,
        element extensions { extensionsType }?,
        element trkseg {
          element trkpt { wptType }*,
          element extensions { extensionsType }?
        }*
      }*,
      element extensions { extensionsType }?
    }
any =
  element * - (local:* | ns1:*) {
    mixed {
      (attribute * { text }
       | any)*
    }
  }
linkType =
  (attribute href { xsd:anyURI },
   (notAllowed
    | element text { \string })?,
   (notAllowed
    | element type { \string })?),
  empty
\string = xsd:string
nonNegativeInteger = xsd:nonNegativeInteger
extensionsType = any*, empty
decimal = xsd:decimal
dateTime = xsd:dateTime
wptType =
  (attribute lon {
     xsd:decimal { minInclusive = "-180" maxExclusive = "180" }
   },
   attribute lat {
     xsd:decimal { minInclusive = "-90" maxInclusive = "90" }
   },
   (notAllowed
    | element ele { decimal })?,
   (notAllowed
    | element time { dateTime })?,
   (notAllowed
    | element magvar {
        xsd:decimal { minInclusive = "0" maxExclusive = "360" }
      })?,
   (notAllowed
    | element geoidheight { decimal })?,
   (notAllowed
    | element name { \string })?,
   (notAllowed
    | element cmt { \string })?,
   (notAllowed
    | element desc { \string })?,
   (notAllowed
    | element src { \string })?,
   (notAllowed
    | element link { linkType })*,
   (notAllowed
    | element sym { \string })?,
   (notAllowed
    | element type { \string })?,
   (notAllowed
    | element fix {
        xsd:string "pps"
        | xsd:string "dgps"
        | xsd:string "3d"
        | xsd:string "none"
        | xsd:string "2d"
      })?,
   (notAllowed
    | element sat { nonNegativeInteger })?,
   (notAllowed
    | element hdop { decimal })?,
   (notAllowed
    | element vdop { decimal })?,
   (notAllowed
    | element pdop { decimal })?,
   (notAllowed
    | element ageofdgpsdata { decimal })?,
   (notAllowed
    | element dgpsid {
        xsd:integer { minInclusive = "0" maxInclusive = "1023" }
      })?,
   (notAllowed
    | element extensions { extensionsType })?),
  empty