diff --git a/base_classes/NXdata.nxdl.xml b/base_classes/NXdata.nxdl.xml
index 991adf0a3d..a7b363ef37 100644
--- a/base_classes/NXdata.nxdl.xml
+++ b/base_classes/NXdata.nxdl.xml
@@ -75,11 +75,12 @@
 
 		More complex cases are supported
 
-		* histogram data: ``x`` has one more value than ``data``.
-		* alternative axes: instead of a single ``x`` axis you can have several axes, one of which being the default.
-		* signals with more than one dimension: ``data`` could be 2D with axes ``x`` and ``y`` along each dimension.
-		* axes with more than one dimension: ``data`` could be 2D with axes ``x`` and ``y`` also being 2D, providing a
-		  unique ``(x, y)`` coordinate for each ``data`` point.
+		* Histogram data. For example ``x`` has one more value than ``data``.
+		* Alternative axes. For example instead of a single ``x`` axis you can have several axes, one of which being the default.
+		* Signals with more than one dimension. For example ``data`` could be 2D with axes ``x`` and ``y`` along each dimension.
+		  Equally 3- or higher-dimensional data is allowed.
+		* Axes with more than one dimension. For example ``data`` could be 2D with axes ``x`` and ``y`` also being 2D, providing a
+		  unique ``(x, y)`` coordinate for each ``data`` point. Equally 3- or higher-dimensional axes are allowed.
 
 		**Signals:**
 
@@ -141,8 +142,8 @@
 		   field name in the :ref:`axes </NXdata@axes-attribute>` attribute are used.
 
 		4. When :ref:`AXISNAME_indices </NXdata@AXISNAME_indices-attribute>` is the same as the indices of "AXISNAME" in the
-		   :ref:`axes </NXdata@axes-attribute>` attribute, there is no need to provide
-		   :ref:`AXISNAME_indices </NXdata@AXISNAME_indices-attribute>`.
+		   :ref:`axes </NXdata@axes-attribute>` attribute and :ref:`AXISNAME </NXdata/AXISNAME-field>` is one-dimensional,
+		   the :ref:`AXISNAME_indices </NXdata@AXISNAME_indices-attribute>` attribute can be omitted.
 
 		5. The indices of "AXISNAME" in the :ref:`axes </NXdata@axes-attribute>` attribute must be a subset of
 		   :ref:`AXISNAME_indices </NXdata@AXISNAME_indices-attribute>`.