<xs:simpleType name="inputOutputAccessTypes">
    <xs:annotation>
        <xs:appinfo>Table of fields having accessType inputOutput.</xs:appinfo>
        <xs:documentation source="http://www.web3d.org/x3d/specifications/ISO-IEC-FDIS-19775-1.2-X3D-AbstractSpecification/Part01/concepts.html#FieldSemantics" />
    </xs:annotation>
    <xs:restriction base="xs:string">
        <xs:enumeration value="activeLayer" />
        <xs:enumeration value="address" />
        <xs:enumeration value="align" />
        <xs:enumeration value="alpha" />
        <xs:enumeration value="ambientIntensity" />
        <xs:enumeration value="anchorPoint" />
        <xs:enumeration value="angularDampingFactor" />
        <xs:enumeration value="angularVelocity" />
        <xs:enumeration value="anisotropicDegree" />
        <xs:enumeration value="antennaLocation" />
        <xs:enumeration value="applicationID" />
        <xs:enumeration value="applied" />
        <xs:enumeration value="appliedParameters" />
        <xs:enumeration value="antennaPatternType" />
        <xs:enumeration value="antennaPatternLength" />
        <xs:enumeration value="articulationParameterArray" />
        <xs:enumeration value="articulationParameterChangeIndicatorArray" />
        <xs:enumeration value="articulationParameterCount" />
        <xs:enumeration value="articulationParameterDesignatorArray" />
        <xs:enumeration value="articulationParameterIdPartAttachedToArray" />
        <xs:enumeration value="articulationParameterTypeArray" />
        <xs:enumeration value="attenuation" />
        <xs:enumeration value="autoCalc" />
        <xs:enumeration value="autoDamp" />
        <xs:enumeration value="autoDisable" />
        <xs:enumeration value="autoOffset" />
        <xs:enumeration value="avatarSize" />
        <xs:enumeration value="axis" />
        <xs:enumeration value="axis1" />
        <xs:enumeration value="axis1Angle" />
        <xs:enumeration value="axis1Torque" />
        <xs:enumeration value="axis2" />
        <xs:enumeration value="axis2Angle" />
        <xs:enumeration value="axis2Torque" />
        <xs:enumeration value="axis3Angle" />
        <xs:enumeration value="axis3Torque" />
        <xs:enumeration value="axisOfRotation" />
        <xs:enumeration value="backAmbientIntensity" />
        <xs:enumeration value="backDiffuseColor" />
        <xs:enumeration value="backEmissiveColor" />
        <xs:enumeration value="backShininess" />
        <xs:enumeration value="backSpecularColor" />
        <xs:enumeration value="backTransparency" />
        <xs:enumeration value="backUrl" />
        <xs:enumeration value="borderColor" />
        <xs:enumeration value="borderWidth" />
        <xs:enumeration value="bottomUrl" />
        <xs:enumeration value="boundaryModeS" />
        <xs:enumeration value="boundaryModeT" />
        <xs:enumeration value="boundaryModeR" />
        <xs:enumeration value="beamWidth" />
        <xs:enumeration value="bottomUrl" />
        <xs:enumeration value="bounce" />
        <xs:enumeration value="center" />
        <xs:enumeration value="centerOfMass" />
        <xs:enumeration value="centerOfRotation" />
        <xs:enumeration value="clipBoundary" />
        <xs:enumeration value="collisionType" />
        <xs:enumeration value="color" />
        <xs:enumeration value="contactNormal" />
        <xs:enumeration value="controlPoint" />
        <xs:enumeration value="constantForceMix" />
        <xs:enumeration value="contactSurfaceThickness" />
        <xs:enumeration value="createParticles" />
        <xs:enumeration value="cryptoSystem" />
        <xs:enumeration value="cryptoKeyID" />
        <xs:enumeration value="cutOffAngle" />
        <xs:enumeration value="cycleInterval" />
        <xs:enumeration value="data" />
        <xs:enumeration value="dataLength" />
        <xs:enumeration value="deadReckoning" />
        <xs:enumeration value="deletionAllowed" />
        <xs:enumeration value="depth" />
        <xs:enumeration value="description" />
        <xs:enumeration value="desiredAngularVelocity1" />
        <xs:enumeration value="desiredAngularVelocity2" />
        <xs:enumeration value="detonationLocation" />
        <xs:enumeration value="detonationRelativeLocation" />
        <xs:enumeration value="detonationResult" />
        <xs:enumeration value="diffuseColor" />
        <xs:enumeration value="direction" />
        <xs:enumeration value="disableAngularSpeed" />
        <xs:enumeration value="disableLinearSpeed" />
        <xs:enumeration value="disableTime" />
        <xs:enumeration value="diskAngle" />
        <xs:enumeration value="displacements" />
        <xs:enumeration value="displayed" />
        <xs:enumeration value="easeInEaseOut" />
        <xs:enumeration value="emissiveColor" />
        <xs:enumeration value="enabled" />
        <xs:enumeration value="enabledAxes" />
        <xs:enumeration value="encodingScheme" />
        <xs:enumeration value="entityID" />
        <xs:enumeration value="entityKind" />
        <xs:enumeration value="entityDomain" />
        <xs:enumeration value="entityCountry" />
        <xs:enumeration value="entityCategory" />
        <xs:enumeration value="entitySubCategory" />
        <xs:enumeration value="entitySpecific" />
        <xs:enumeration value="entityExtra" />
        <xs:enumeration value="errorCorrection" />
        <xs:enumeration value="eventApplicationID" />
        <xs:enumeration value="eventEntityID" />
        <xs:enumeration value="eventNumber" />
        <xs:enumeration value="eventSiteID" />
        <xs:enumeration value="family" />
        <xs:enumeration value="fanCount" />
        <xs:enumeration value="fieldOfView" />
        <xs:enumeration value="filled" />
        <xs:enumeration value="finiteRotationAxis" />
        <xs:enumeration value="fired1" />
        <xs:enumeration value="fired2" />
        <xs:enumeration value="fireMissionIndex" />
        <xs:enumeration value="firingRange" />
        <xs:enumeration value="firingRate" />
        <xs:enumeration value="fixed" />
        <xs:enumeration value="fogType" />
        <xs:enumeration value="force" />
        <xs:enumeration value="forceID" />
        <xs:enumeration value="forces" />
        <xs:enumeration value="frequency" />
        <xs:enumeration value="frictionCoefficients" />
        <xs:enumeration value="frictionDirection" />
        <xs:enumeration value="frontUrl" />
        <xs:enumeration value="function" />
        <xs:enumeration value="fuse" />
        <xs:enumeration value="geoCenter" />
        <xs:enumeration value="geoCoords" />
        <xs:enumeration value="global" />
        <xs:enumeration value="gravity" />
        <xs:enumeration value="groundAngle" />
        <xs:enumeration value="groundColor" />
        <xs:enumeration value="gustiness" />
        <xs:enumeration value="hatchColor" />
        <xs:enumeration value="hatched" />
        <xs:enumeration value="hatchStyle" />
        <xs:enumeration value="headlight" />
        <xs:enumeration value="image" />
        <xs:enumeration value="inertia" />
        <xs:enumeration value="info" />
        <xs:enumeration value="inputSource" />
        <xs:enumeration value="integerKey" />
        <xs:enumeration value="intensity" />
        <xs:enumeration value="iterations" />
        <xs:enumeration value="isPickable" />
        <xs:enumeration value="key" />
        <xs:enumeration value="keyVelocity" />
        <xs:enumeration value="jump" />
        <xs:enumeration value="keyValue" />
        <xs:enumeration value="leftUrl" />
        <xs:enumeration value="length" />
        <xs:enumeration value="lengthOfModulationParameters" />
        <xs:enumeration value="lifetimeVariation" />
        <xs:enumeration value="limitOrientation" />
        <xs:enumeration value="linearAcceleration" />
        <xs:enumeration value="linearDampingFactor" />
        <xs:enumeration value="linearVelocity" />
        <xs:enumeration value="linetype" />
        <xs:enumeration value="linewidthScaleFactor" />
        <xs:enumeration value="llimit" />
        <xs:enumeration value="load" />
        <xs:enumeration value="location" />
        <xs:enumeration value="loop" />
        <xs:enumeration value="marking" />
        <xs:enumeration value="mass" />
        <xs:enumeration value="magnificationFilter" />
        <xs:enumeration value="maxAngle" />
        <xs:enumeration value="matrix" />
        <xs:enumeration value="maxAngle1" />
        <xs:enumeration value="maxBack" />
        <xs:enumeration value="maxCorrectionSpeed" />
        <xs:enumeration value="maxExtent" />
        <xs:enumeration value="maxFront" />
        <xs:enumeration value="maxParticles" />
        <xs:enumeration value="maxPosition" />
        <xs:enumeration value="maxSeparation" />
        <xs:enumeration value="maxTorque1" />
        <xs:enumeration value="maxTorque2" />
        <xs:enumeration value="minAngle" />
        <xs:enumeration value="minAngle1" />
        <xs:enumeration value="minBack" />
        <xs:enumeration value="minBounceSpeed" />
        <xs:enumeration value="minFront" />
        <xs:enumeration value="minificationFilter" />
        <xs:enumeration value="minPosition" />
        <xs:enumeration value="minSeparation" />
        <xs:enumeration value="mode" />
        <xs:enumeration value="modulationTypeSpreadSpectrum" />
        <xs:enumeration value="modulationTypeMajor" />
        <xs:enumeration value="modulationTypeDetail" />
        <xs:enumeration value="modulationTypeSystem" />
        <xs:enumeration value="momentsOfInertia" />
        <xs:enumeration value="motor1Axis" />
        <xs:enumeration value="motor2Axis" />
        <xs:enumeration value="motor3Axis" />
        <xs:enumeration value="multicastRelayHost" />
        <xs:enumeration value="multicastRelayPort" />
        <xs:enumeration value="munitionEndPoint" />
        <xs:enumeration value="munitionStartPoint" />
        <xs:enumeration value="munitionApplicationID" />
        <xs:enumeration value="munitionEntityID" />
        <xs:enumeration value="munitionSiteID" />
        <xs:enumeration value="munitionQuantity" />
        <xs:enumeration value="mustOutput" />
        <xs:enumeration value="name" />
        <xs:enumeration value="navType" />
        <xs:enumeration value="networkMode" />
        <xs:enumeration value="normalizeVelocity" />
        <xs:enumeration value="objectType" />
        <xs:enumeration value="offset" />
        <xs:enumeration value="offsetUnits" />
        <xs:enumeration value="on" />
        <xs:enumeration value="particleLifetime" />
        <xs:enumeration value="particleSize" />
        <xs:enumeration value="pauseTime" />
        <xs:enumeration value="parameter" />
        <xs:enumeration value="pickable" />
        <xs:enumeration value="pitch" />
        <xs:enumeration value="plane" />
        <xs:enumeration value="point" />
        <xs:enumeration value="port" />
        <xs:enumeration value="position" />
        <xs:enumeration value="power" />
        <xs:enumeration value="preferAccuracy" />
        <xs:enumeration value="priority" />
        <xs:enumeration value="radioID" />
        <xs:enumeration value="radioEntityTypeKind" />
        <xs:enumeration value="radioEntityTypeDomain" />
        <xs:enumeration value="radioEntityTypeCountry" />
        <xs:enumeration value="radioEntityTypeCategory" />
        <xs:enumeration value="radioEntityTypeNomenclature" />
        <xs:enumeration value="radioEntityTypeNomenclatureVersion" />
        <xs:enumeration value="readInterval" />
        <xs:enumeration value="receivedPower" />
        <xs:enumeration value="receiverState" />
        <xs:enumeration value="reference" />
        <xs:enumeration value="relativeAntennaLocation" />
        <xs:enumeration value="retainUserOffsets" />
        <xs:enumeration value="resumeTime" />
        <xs:enumeration value="rightUrl" />
        <xs:enumeration value="rotation" />
        <xs:enumeration value="sampleRate" />
        <xs:enumeration value="samples" />
        <xs:enumeration value="scale" />
        <xs:enumeration value="scaleMode" />
        <xs:enumeration value="scaleOrientation" />
        <xs:enumeration value="separateBackColor" />
        <xs:enumeration value="shininess" />
        <xs:enumeration value="siteID" />
        <xs:enumeration value="sizeUnits" />
        <xs:enumeration value="skinCoordIndex" />
        <xs:enumeration value="skinCoordWeight" />
        <xs:enumeration value="skyColor" />
        <xs:enumeration value="skyAngle" />
        <xs:enumeration value="slipCoefficients" />
        <xs:enumeration value="slipFactors" />
        <xs:enumeration value="softnessConstantForceMix" />
        <xs:enumeration value="softnessErrorCorrection" />
        <xs:enumeration value="source" />
        <xs:enumeration value="specularColor" />
        <xs:enumeration value="speed" />
        <xs:enumeration value="startTime" />
        <xs:enumeration value="stiffness" />
        <xs:enumeration value="stopBounce" />
        <xs:enumeration value="stopConstantForceMix1" />
        <xs:enumeration value="stopErrorCorrection" />
        <xs:enumeration value="stopErrorCorrection1" />
        <xs:enumeration value="stopBounce1" />
        <xs:enumeration value="stop1Bounce" />
        <xs:enumeration value="stop2Bounce" />
        <xs:enumeration value="stop3Bounce" />
        <xs:enumeration value="stop1ErrorCorrection" />
        <xs:enumeration value="stop2ErrorCorrection" />
        <xs:enumeration value="stop3ErrorCorrection" />
        <xs:enumeration value="stopTime" />
        <xs:enumeration value="string" />
        <xs:enumeration value="stripCount" />
        <xs:enumeration value="summary" />
        <xs:enumeration value="surfaceSpeed" />
        <xs:enumeration value="suspensionErrorCorrection" />
        <xs:enumeration value="suspensionForce" />
        <xs:enumeration value="tau" />
        <xs:enumeration value="tdlType" />
        <xs:enumeration value="tessellation" />
        <xs:enumeration value="tessellationScale" />
        <xs:enumeration value="textureCompression" />
        <xs:enumeration value="texturePriority" />
        <xs:enumeration value="timeOut" />
        <xs:enumeration value="toggle" />
        <xs:enumeration value="tolerance" />
        <xs:enumeration value="topUrl" />
        <xs:enumeration value="torques" />
        <xs:enumeration value="transitionTime" />
        <xs:enumeration value="transitionType" />
        <xs:enumeration value="translation" />
        <xs:enumeration value="transmitFrequencyBandwidth" />
        <xs:enumeration value="transmitState" />
        <xs:enumeration value="transmitterApplicationID" />
        <xs:enumeration value="transmitterEntityID" />
        <xs:enumeration value="transmitterRadioID" />
        <xs:enumeration value="transmitterSiteID" />
        <xs:enumeration value="transparent" />
        <xs:enumeration value="transparency" />
        <xs:enumeration value="turbulence" />
        <xs:enumeration value="type" />
        <xs:enumeration value="ulimit" />
        <xs:enumeration value="update" />
        <xs:enumeration value="url" />
        <xs:enumeration value="useFiniteRotation" />
        <xs:enumeration value="useGeometry" />
        <xs:enumeration value="useGlobalGravity" />
        <xs:enumeration value="uTessellation" />
        <xs:enumeration value="variation" />
        <xs:enumeration value="value" />
        <xs:enumeration value="version" />
        <xs:enumeration value="vector" />
        <xs:enumeration value="vertexCount" />
        <xs:enumeration value="vertices" />
        <xs:enumeration value="visibilityLimit" />
        <xs:enumeration value="visibilityRange" />
        <xs:enumeration value="visible" />
        <xs:enumeration value="vTessellation" />
        <xs:enumeration value="warhead" />
        <xs:enumeration value="weight" />
        <xs:enumeration value="whichChoice" />
        <xs:enumeration value="whichGeometry" />
        <xs:enumeration value="writeInterval" />
        <xs:enumeration value="yScale" />
        <!-- TODO:  align spec names -->
        <!-- ConeEmitter contact is special case -->
    </xs:restriction>
</xs:simpleType>