# Relax NG schema for the UPnP Service Control Protocol Definition files.  See# section 2.3 of UPnP Device Architecture 1.0 for the canonical reference.default namespace = "urn:schemas-upnp-org:service-1-0"start = scpdscpd = element scpd {   element specVersion {      element major { text } &      element minor { text }   } &      element actionList {      element action {         element name { text } &         element argumentList {            element argument {               element name { text } &               element direction { "in"|"out" } &               element retval { text }? &               element relatedStateVariable { text }            }+         }?      }+   }? &      element serviceStateTable {      element stateVariable {         attribute sendEvents { "yes"|"no" }? &         element name { text } &         element dataType {            "ui1"|"ui2"|"ui4"|"i1"|"i2"|"i4"|"int"|            "r4"|"r8"|"number"|"fixed.14.4"|"float"|            "char"|"string"|            "date"|"dateTime"|"dateTime.tz"|"time"|"time.tz"|            "boolean"|"bin.base64"|"bin.hex"|"uri"|"uuid"         } &         element defaultValue { text }? &         (            element allowedValueList {               element allowedValue { text }+            }          |            element allowedValueRange {               element minimum { text } &               element maximum { text } &               element step { text }?            }         )?      }+   }}