diff --git a/nxdl.xsd b/nxdl.xsd
index 1f88a8ccb..7784e5c17 100755
--- a/nxdl.xsd
+++ b/nxdl.xsd
@@ -2,7 +2,7 @@
 
 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
 	targetNamespace="http://definition.nexusformat.org/nxdl/3.1"
-	xmlns:nx="http://definition.nexusformat.org/nxdl/3.1"
+	xmlns:nxdl="http://definition.nexusformat.org/nxdl/3.1"
 	elementFormDefault="qualified">
 
 	<xs:annotation>
@@ -44,7 +44,7 @@
 	<!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
 	
 	<!-- define the document root element -->
-	<xs:element name="definition" type="nx:definitionType">
+	<xs:element name="definition" type="nxdl:definitionType">
 		<xs:annotation>
 			<xs:documentation>
 				A ``definition`` element
@@ -94,7 +94,7 @@
 			  to define a data type.)
 			</xs:documentation>  
 		</xs:annotation>  
-		<xs:restriction base="nx:validItemName">
+		<xs:restriction base="nxdl:validItemName">
 			<xs:pattern value="NX.+"/>
 		</xs:restriction>
 	</xs:simpleType>
@@ -198,7 +198,7 @@
 			</xs:documentation>
 		</xs:annotation>
 		<xs:sequence>
-			<xs:element name="symbols" type="nx:symbolsType" minOccurs="0" maxOccurs="1">
+			<xs:element name="symbols" type="nxdl:symbolsType" minOccurs="0" maxOccurs="1">
 				<xs:annotation>
 					<xs:documentation>
 						Use a ``symbols`` list  
@@ -207,7 +207,7 @@
 					</xs:documentation>
 				</xs:annotation>
 			</xs:element>
-			<xs:group ref="nx:groupGroup" minOccurs="0" maxOccurs="unbounded">
+			<xs:group ref="nxdl:groupGroup" minOccurs="0" maxOccurs="unbounded">
 				<xs:annotation>
 					<xs:documentation>
 						In addition to an optional ``symbols`` list,
@@ -217,7 +217,7 @@
 				</xs:annotation>
 			</xs:group>
 		</xs:sequence>
-		<xs:attribute name="name" use="required" type="nx:validItemName">
+		<xs:attribute name="name" use="required" type="nxdl:validItemName">
 			<xs:annotation>
 				<xs:documentation>
 					The ``name`` of this NXDL file (case sensitive without the file extension).
@@ -229,7 +229,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="type" use="required" type="nx:definitionTypeAttr">
+		<xs:attribute name="type" use="required" type="nxdl:definitionTypeAttr">
 			<xs:annotation>
 				<xs:documentation>Must be ``type="group"``</xs:documentation>
 			</xs:annotation>
@@ -288,7 +288,7 @@
 				</xs:restriction>
 			</xs:simpleType>
 		</xs:attribute>
-		<xs:attribute name="ignoreExtraGroups" use="optional" type="nx:NX_BOOLEAN" default="false">
+		<xs:attribute name="ignoreExtraGroups" use="optional" type="nxdl:NX_BOOLEAN" default="false">
 			<xs:annotation>
 				<xs:documentation>
 					Only validate known groups; do not not warn about unknowns.
@@ -304,7 +304,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="ignoreExtraFields" use="optional" type="nx:NX_BOOLEAN" default="false">
+		<xs:attribute name="ignoreExtraFields" use="optional" type="nxdl:NX_BOOLEAN" default="false">
 			<xs:annotation>
 				<xs:documentation>
 					Only validate known fields; do not not warn about unknowns.
@@ -320,7 +320,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="ignoreExtraAttributes" use="optional" type="nx:NX_BOOLEAN" default="false">
+		<xs:attribute name="ignoreExtraAttributes" use="optional" type="nxdl:NX_BOOLEAN" default="false">
 			<xs:annotation>
 				<xs:documentation>
 					Only validate known attributes; do not not warn about unknowns.
@@ -336,7 +336,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attributeGroup ref="nx:deprecatedAttributeGroup"/>
+		<xs:attributeGroup ref="nxdl:deprecatedAttributeGroup"/>
 	</xs:complexType>
 	
 	<xs:simpleType name="definitionTypeAttr">
@@ -364,7 +364,7 @@
 			</xs:documentation>
 		</xs:annotation>
 		<xs:sequence>
-		  <xs:element name="group" type="nx:groupType" minOccurs="2" maxOccurs="unbounded">
+		  <xs:element name="group" type="nxdl:groupType" minOccurs="2" maxOccurs="unbounded">
 		  	<xs:annotation>
 		  		<xs:documentation>
 		  			NeXus base class that could be used here.
@@ -377,7 +377,7 @@
 		  	</xs:annotation>
 		  </xs:element>
 		</xs:sequence>
-		<xs:attribute name="name" use="required" type="nx:validItemName">
+		<xs:attribute name="name" use="required" type="nxdl:validItemName">
 			<xs:annotation>
 				<xs:documentation>
 					The name to be applied to the selected child group.  
@@ -409,14 +409,14 @@
 				to define elements and attributes to be used by users in NXDL specifications.)
 			</xs:documentation>
 		</xs:annotation>
-		<xs:group ref="nx:groupGroup" minOccurs="0" maxOccurs="unbounded">
+		<xs:group ref="nxdl:groupGroup" minOccurs="0" maxOccurs="unbounded">
 			<xs:annotation>
 				<xs:documentation>
 					A ``group`` may be contained within another ``group``.
 				</xs:documentation>
 			</xs:annotation>
 		</xs:group>
-		<xs:attribute name="type" use="required" type="nx:validNXClassName">
+		<xs:attribute name="type" use="required" type="nxdl:validNXClassName">
 			<xs:annotation>
 				<xs:documentation>
 					The ``type`` attribute *must* 
@@ -425,7 +425,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="name" use="optional" type="nx:validItemName">
+		<xs:attribute name="name" use="optional" type="nxdl:validItemName">
 			<xs:annotation>
 				<xs:documentation>
 					A particular scientific application may expect
@@ -450,7 +450,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="minOccurs" use="optional" default="0" type="nx:nonNegativeUnbounded">
+		<xs:attribute name="minOccurs" use="optional" default="0" type="nxdl:nonNegativeUnbounded">
 			<xs:annotation>
 				<xs:documentation>
 					Minimum number of times this ``group`` is allowed to be present within its
@@ -460,7 +460,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="recommended" use="optional" type="nx:NX_BOOLEAN" default="false" >
+		<xs:attribute name="recommended" use="optional" type="nxdl:NX_BOOLEAN" default="false" >
 			<xs:annotation>
 				<xs:documentation>
 					A synonym for optional, but with the recommendation that this
@@ -468,14 +468,14 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="optional" use="optional" type="nx:NX_BOOLEAN" default="false" >
+		<xs:attribute name="optional" use="optional" type="nxdl:NX_BOOLEAN" default="false" >
 			<xs:annotation>
 				<xs:documentation>
 					A synonym for minOccurs=0.
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="maxOccurs" use="optional" type="nx:nonNegativeUnbounded">
+		<xs:attribute name="maxOccurs" use="optional" type="nxdl:nonNegativeUnbounded">
 			<xs:annotation>
 				<xs:documentation>
 					Maximum number of times this ``group`` is allowed to be present within its
@@ -485,7 +485,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attributeGroup ref="nx:deprecatedAttributeGroup"/>
+		<xs:attributeGroup ref="nxdl:deprecatedAttributeGroup"/>
 	</xs:complexType>
 
 	<xs:group name="groupGroup">
@@ -496,7 +496,7 @@
 			</xs:documentation>
 		</xs:annotation>
 		<xs:sequence>
-			<xs:element name="doc" type="nx:docType" minOccurs="0" maxOccurs="1">
+			<xs:element name="doc" type="nxdl:docType" minOccurs="0" maxOccurs="1">
 				<xs:annotation>
 					<xs:documentation>
 						Describe the purpose of this ``group``. 
@@ -511,7 +511,7 @@
 					</xs:documentation>
 				</xs:annotation>
 			</xs:element>
-			<xs:element name="attribute" type="nx:attributeType" minOccurs="0" maxOccurs="unbounded">
+			<xs:element name="attribute" type="nxdl:attributeType" minOccurs="0" maxOccurs="unbounded">
 				<xs:annotation>
 					<xs:documentation>
 						Use an ``attribute`` if additional information 
@@ -519,7 +519,7 @@
 					</xs:documentation>
 				</xs:annotation>
 			</xs:element>
-			<xs:element name="choice" type="nx:choiceType" minOccurs="0" maxOccurs="unbounded">
+			<xs:element name="choice" type="nxdl:choiceType" minOccurs="0" maxOccurs="unbounded">
 				<xs:annotation>
 					<xs:documentation>
 						Use a ``choice`` if a named group could be either
@@ -527,21 +527,21 @@
 					</xs:documentation>
 				</xs:annotation>
 			</xs:element>
-			<xs:element name="group" type="nx:groupType" minOccurs="0" maxOccurs="unbounded">
+			<xs:element name="group" type="nxdl:groupType" minOccurs="0" maxOccurs="unbounded">
 				<xs:annotation>
 					<xs:documentation>
 						A ``group`` may contain ``group``s.
 					</xs:documentation>
 				</xs:annotation>
 			</xs:element>
-			<xs:element name="field" type="nx:fieldType" minOccurs="0" maxOccurs="unbounded">
+			<xs:element name="field" type="nxdl:fieldType" minOccurs="0" maxOccurs="unbounded">
 				<xs:annotation>
 					<xs:documentation>
 						A ``group`` may contain ``field`` elements (datasets).
 					</xs:documentation>
 				</xs:annotation>
 			</xs:element>
-			<xs:element name="link" type="nx:linkType" minOccurs="0" maxOccurs="unbounded">
+			<xs:element name="link" type="nxdl:linkType" minOccurs="0" maxOccurs="unbounded">
 				<xs:annotation>
 					<xs:documentation>
 						Use a ``link`` to refer locally to 
@@ -582,7 +582,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		<xs:sequence>
-			<xs:element name="doc" type="nx:docType" minOccurs="0" maxOccurs="1">
+			<xs:element name="doc" type="nxdl:docType" minOccurs="0" maxOccurs="1">
 				<xs:annotation>
 					<xs:documentation>
 						Describe this ``basicComponent`` and its use.
@@ -591,7 +591,7 @@
 				</xs:annotation>
 			</xs:element>
 		</xs:sequence>
-		<xs:attribute name="name" use="required" type="nx:validItemName">
+		<xs:attribute name="name" use="required" type="nxdl:validItemName">
 			<xs:annotation>
 				<xs:documentation>
 					The ``name`` attribute is the
@@ -608,7 +608,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attributeGroup ref="nx:deprecatedAttributeGroup"/>
+		<xs:attributeGroup ref="nxdl:deprecatedAttributeGroup"/>
 	</xs:complexType>
 
 	<!-- +++++++++++++++++++++++++++++++++++++++++++++++++++++++ -->
@@ -632,23 +632,23 @@
 			</xs:documentation>
 		</xs:annotation>
 		<xs:complexContent>
-			<xs:extension base="nx:basicComponent">
+			<xs:extension base="nxdl:basicComponent">
 				<xs:sequence>
-					<xs:element name="dimensions" type="nx:dimensionsType" minOccurs="0" maxOccurs="1">
+					<xs:element name="dimensions" type="nxdl:dimensionsType" minOccurs="0" maxOccurs="1">
 						<xs:annotation>
 							<xs:documentation>
 								dimensions of a data element in a NeXus file
 							</xs:documentation>
 						</xs:annotation>
 					</xs:element>
-					<xs:element name="attribute" type="nx:attributeType" minOccurs="0" maxOccurs="unbounded">
+					<xs:element name="attribute" type="nxdl:attributeType" minOccurs="0" maxOccurs="unbounded">
 						<xs:annotation>
 							<xs:documentation>
 								attributes to be used with this field
 							</xs:documentation>
 						</xs:annotation>
 					</xs:element>
-					<xs:element name="enumeration" type="nx:enumerationType" minOccurs="0">
+					<xs:element name="enumeration" type="nxdl:enumerationType" minOccurs="0">
 						<xs:annotation>
 							<xs:documentation>
 								A field can specify which values are to be used
@@ -656,7 +656,7 @@
 						</xs:annotation>
 					</xs:element>
 				</xs:sequence>
-				<xs:attribute name="units" type="nx:anyUnitsAttr">
+				<xs:attribute name="units" type="nxdl:anyUnitsAttr">
 					<xs:annotation>
 						<xs:documentation>
 							String describing the engineering units.
@@ -666,7 +666,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="long_name" type="nx:NX_CHAR">
+				<xs:attribute name="long_name" type="nxdl:NX_CHAR">
 					<xs:annotation>
 						<xs:documentation>
 							Descriptive name for this field (may include whitespace and engineering units).
@@ -674,7 +674,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="signal" type="nx:NX_POSINT">
+				<xs:attribute name="signal" type="nxdl:NX_POSINT">
 					<xs:annotation>
 						<xs:documentation>
 							Presence of the ``signal`` attribute means this field is an ordinate.
@@ -691,7 +691,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="axes" type="nx:NX_CHAR">
+				<xs:attribute name="axes" type="nxdl:NX_CHAR">
 					<xs:annotation>
 						<xs:documentation>
 							NOTE: Use of the ``axes`` attribute for a
@@ -716,7 +716,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="axis" type="nx:NX_POSINT">
+				<xs:attribute name="axis" type="nxdl:NX_POSINT">
 					<xs:annotation>
 						<xs:documentation>
 							NOTE: Use of this attribute is discouraged.  It is for legacy support.
@@ -749,7 +749,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="primary" type="nx:NX_POSINT">
+				<xs:attribute name="primary" type="nxdl:NX_POSINT">
 					<xs:annotation>
 						<xs:documentation>
 							Integer indicating the priority of selection
@@ -760,7 +760,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="type" type="nx:primitiveType" default="NX_CHAR">
+				<xs:attribute name="type" type="nxdl:primitiveType" default="NX_CHAR">
 					<xs:annotation>
 						<xs:documentation>
 							Defines the type of the element as allowed by NeXus.
@@ -769,7 +769,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="minOccurs" use="optional" default="0" type="nx:nonNegativeUnbounded">
+				<xs:attribute name="minOccurs" use="optional" default="0" type="nxdl:nonNegativeUnbounded">
 					<xs:annotation>
 						<xs:documentation>
 							Defines the minimum number of times this ``field`` may be used.  Its
@@ -778,7 +778,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="recommended" use="optional" type="nx:NX_BOOLEAN" default="false" >
+				<xs:attribute name="recommended" use="optional" type="nxdl:NX_BOOLEAN" default="false" >
 					<xs:annotation>
 						<xs:documentation>
 							A synonym for optional, but with the recommendation that this
@@ -786,14 +786,14 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="optional" use="optional" type="nx:NX_BOOLEAN" default="false" >
+				<xs:attribute name="optional" use="optional" type="nxdl:NX_BOOLEAN" default="false" >
 					<xs:annotation>
 						<xs:documentation>
 							A synonym for minOccurs=0.
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="maxOccurs" use="optional"  default="1" type="nx:nonNegativeUnbounded">
+				<xs:attribute name="maxOccurs" use="optional"  default="1" type="nxdl:nonNegativeUnbounded">
 					<xs:annotation>
 						<xs:documentation>
 							Defines the maximum number of times this element may be used.  Its
@@ -803,7 +803,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="stride" use="optional"  default="1" type="nx:NX_INT">
+				<xs:attribute name="stride" use="optional"  default="1" type="nxdl:NX_INT">
 					<xs:annotation>
 						<xs:documentation>
 							The ``stride`` and ``data_offset`` attributes
@@ -837,7 +837,7 @@
 						</xs:documentation>
 					</xs:annotation>
 				</xs:attribute>
-				<xs:attribute name="data_offset" use="optional"  default="1" type="nx:nonNegativeUnbounded">
+				<xs:attribute name="data_offset" use="optional"  default="1" type="nxdl:nonNegativeUnbounded">
 					<xs:annotation>
 						<!--
 							note: renamed from "offset" due to conflict with CIF usage.
@@ -900,7 +900,7 @@
 						</xs:documentation>
 					</xs:annotation>
 					<xs:simpleType>
-						<xs:restriction base="nx:NX_CHAR">
+						<xs:restriction base="nxdl:NX_CHAR">
 							<xs:enumeration value="scalar"/>
 							<xs:enumeration value="spectrum"/>
 							<xs:enumeration value="image"/>
@@ -922,7 +922,7 @@
 						</xs:documentation>
 					</xs:annotation>
 					<xs:simpleType>
-						<xs:restriction base="nx:NX_CHAR">
+						<xs:restriction base="nxdl:NX_CHAR">
 							<xs:enumeration value="specified" />
 							<xs:enumeration value="any" />
 						</xs:restriction>
@@ -948,7 +948,7 @@
 			</xs:documentation>
 		</xs:annotation>
 		<xs:sequence>
-			<xs:element name="doc" type="nx:docType" minOccurs="0">
+			<xs:element name="doc" type="nxdl:docType" minOccurs="0">
 				<xs:annotation>
 					<xs:documentation>
 						Description of this ``attribute``.
@@ -956,7 +956,7 @@
 					</xs:documentation>
 				</xs:annotation>
 			</xs:element>
-			<xs:element name="enumeration" type="nx:enumerationType"
+			<xs:element name="enumeration" type="nxdl:enumerationType"
 				minOccurs="0">
 				<xs:annotation>
 					<xs:documentation>
@@ -964,7 +964,7 @@
 					</xs:documentation>
 				</xs:annotation>
 			</xs:element>
-			<xs:element name="dimensions" type="nx:dimensionsType" minOccurs="0" maxOccurs="1">
+			<xs:element name="dimensions" type="nxdl:dimensionsType" minOccurs="0" maxOccurs="1">
 				<xs:annotation>
 					<xs:documentation>
 						dimensions of an attribute with data value(s) in a NeXus file
@@ -972,14 +972,14 @@
 				</xs:annotation>
 			</xs:element>
 		</xs:sequence>
-		<xs:attribute name="name" use="required" type="nx:validItemName">
+		<xs:attribute name="name" use="required" type="nxdl:validItemName">
 			<xs:annotation>
 				<xs:documentation>
 					Name of the attribute (unique within the enclosing group).
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="type" type="nx:primitiveType" default="NX_CHAR">
+		<xs:attribute name="type" type="nxdl:primitiveType" default="NX_CHAR">
 			<xs:annotation>
 				<xs:documentation>
 					Type of the attribute.
@@ -989,7 +989,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="recommended" use="optional" type="nx:NX_BOOLEAN" default="false" >
+		<xs:attribute name="recommended" use="optional" type="nxdl:NX_BOOLEAN" default="false" >
 			<xs:annotation>
 				<xs:documentation>
 					A synonym for optional, but with the recommendation that this
@@ -997,7 +997,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attribute name="optional" type="nx:NX_BOOLEAN" default="true">
+		<xs:attribute name="optional" type="nxdl:NX_BOOLEAN" default="true">
 			<xs:annotation>
 				<xs:documentation>
 					Is this attribute *optional* (if **true**)
@@ -1005,7 +1005,7 @@
 				</xs:documentation>
 			</xs:annotation>
 		</xs:attribute>
-		<xs:attributeGroup ref="nx:deprecatedAttributeGroup"/>
+		<xs:attributeGroup ref="nxdl:deprecatedAttributeGroup"/>
 	</xs:complexType>
 
 	<xs:simpleType name="nonNegativeUnbounded">
@@ -1041,8 +1041,8 @@
 			</xs:documentation>
 		</xs:annotation>
 		<xs:complexContent>
-			<xs:extension base="nx:basicComponent">
-				<xs:attribute name="target" use="required" type="nx:validTargetName">
+			<xs:extension base="nxdl:basicComponent">
+				<xs:attribute name="target" use="required" type="nxdl:validTargetName">
 					<xs:annotation>
 						<xs:documentation>
 							Declares the absolute HDF5 address of an existing field or group.
@@ -1144,7 +1144,7 @@
 			</xs:documentation>
 		</xs:annotation>
 		<xs:sequence>
-			<xs:element name="doc" type="nx:docType" minOccurs="0" maxOccurs="1">
+			<xs:element name="doc" type="nxdl:docType" minOccurs="0" maxOccurs="1">
 				<xs:annotation>
 					<xs:documentation>
 						Describe the purpose of this list of ``symbols``.
@@ -1163,7 +1163,7 @@
 				</xs:annotation>
 				<xs:complexType>
 					<xs:sequence>
-						<xs:element name="doc" type="nx:docType" minOccurs="0" maxOccurs="1">
+						<xs:element name="doc" type="nxdl:docType" minOccurs="0" maxOccurs="1">
 							<xs:annotation>
 								<xs:documentation>
 									Describe the purpose of the parent ``symbol``.
@@ -1172,7 +1172,7 @@
 							</xs:annotation>
 						</xs:element>
 					</xs:sequence>
-					<xs:attribute name="name" type="nx:validItemName">
+					<xs:attribute name="name" type="nxdl:validItemName">
 						<xs:annotation>
 							<xs:documentation>
 								Mnemonic variable name for this array index symbol.
@@ -1223,7 +1223,7 @@
 				</xs:annotation>				
 				<xs:complexType>
 					<xs:sequence>
-						<xs:element name="doc" type="nx:docType" minOccurs="0" maxOccurs="1">
+						<xs:element name="doc" type="nxdl:docType" minOccurs="0" maxOccurs="1">
 							<xs:annotation>
 								<xs:documentation>
 									Individual items can be documented
@@ -1258,7 +1258,7 @@
 			</xs:documentation>
 		</xs:annotation>
 		<xs:sequence>
-			<xs:element name="doc" type="nx:docType" minOccurs="0">
+			<xs:element name="doc" type="nxdl:docType" minOccurs="0">
 				<xs:annotation>
 					<xs:documentation>
 						Documentation might be necessary to describe how the parts
@@ -1290,7 +1290,7 @@
 					</xs:documentation>
 				</xs:annotation>
 				<xs:complexType>
-					<xs:attribute name="index" type="nx:NX_CHAR" use="required">
+					<xs:attribute name="index" type="nxdl:NX_CHAR" use="required">
 						<xs:annotation>
 							<xs:documentation>
 								Number or symbol indicating which axis (subscript) is
@@ -1303,7 +1303,7 @@
 							</xs:documentation>
 						</xs:annotation>
 					</xs:attribute>
-					<xs:attribute name="value" type="nx:NX_CHAR">
+					<xs:attribute name="value" type="nxdl:NX_CHAR">
 						<xs:annotation>
 							<xs:documentation>
 								Integer length (number of values), or mnemonic symbol
@@ -1311,7 +1311,7 @@
 							</xs:documentation>
 						</xs:annotation>
 					</xs:attribute>
-					<xs:attribute name="ref" type="nx:NX_CHAR">
+					<xs:attribute name="ref" type="nxdl:NX_CHAR">
 						<xs:annotation>
 							<xs:documentation>
 								Deprecated: 2016-11-23 telco 
@@ -1324,7 +1324,7 @@
 							</xs:documentation>
 						</xs:annotation>
 					</xs:attribute>
-					<xs:attribute name="refindex" type="nx:NX_CHAR">
+					<xs:attribute name="refindex" type="nxdl:NX_CHAR">
 						<xs:annotation>
 							<xs:documentation>
 								Deprecated: 2016-11-23 telco 
@@ -1336,7 +1336,7 @@
 							</xs:documentation>
 						</xs:annotation>
 					</xs:attribute>
-					<xs:attribute name="incr" type="nx:NX_CHAR">
+					<xs:attribute name="incr" type="nxdl:NX_CHAR">
 						<xs:annotation>
 							<xs:documentation>
 								Deprecated: 2016-11-23 telco 
@@ -1349,7 +1349,7 @@
 							</xs:documentation>
 						</xs:annotation>
 					</xs:attribute>
-					<xs:attribute name="required" type="nx:NX_BOOLEAN" default="true">
+					<xs:attribute name="required" type="nxdl:NX_BOOLEAN" default="true">
 						<xs:annotation>
 							<xs:documentation>
 								This dimension is required (true: default) or not required (false).
@@ -1366,7 +1366,7 @@
 				</xs:complexType>
 			</xs:element>
 		</xs:sequence>
-		<xs:attribute name="rank" type="nx:NX_CHAR">
+		<xs:attribute name="rank" type="nxdl:NX_CHAR">
 			<xs:annotation>
 				<xs:documentation>
 					Rank (number of dimensions) of the data structure.