diff --git a/Examples/05 - VerySimpleFixedPVC2_with_electrical_layout_v3.pvc b/Examples/05 - VerySimpleFixedPVC2_with_electrical_layout_v3.pvc
index 607a516..25eb9c8 100644
--- a/Examples/05 - VerySimpleFixedPVC2_with_electrical_layout_v3.pvc
+++ b/Examples/05 - VerySimpleFixedPVC2_with_electrical_layout_v3.pvc
@@ -535,9 +535,11 @@
+
+ fixed
diff --git a/schema/pvcollada_schema_0.1.xsd b/schema/pvcollada_schema_0.1.xsd
index f193dae..774f25e 100644
--- a/schema/pvcollada_schema_0.1.xsd
+++ b/schema/pvcollada_schema_0.1.xsd
@@ -61,6 +61,31 @@ xmlns:collada="http://www.collada.org/2008/03/COLLADASchema">
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@@ -897,6 +922,44 @@ xmlns:collada="http://www.collada.org/2008/03/COLLADASchema">
The table tag should only appear in the extra/technique section of a Collada node object. The node itself must have one or more instance_geometry
descendant tags that contain an instance_rack tag.
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+ Tracker type (single_axis, dual_axis).
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+ Nominal maximum angle of rotation from horizontal for a single-axis tracker. A pair of values must be provided, e.g., (-45, 45) with the first value being negative.
+ The tracker_azimuth of the associated racks defines the sign of the rotation angle. Rotation is a right-hand rotation around the azimuth axis.
+ For example, a positive rotation for azimuth=180° is to the west.
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+ Shape of the torque tube's cross-section for a single-axis tracker.
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+ Nominal diameter of a single-axis tracker torque tube.
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+ Maximum angle of a torque axis formed in a gap between racks on a single-axis tracker.
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+ Drive type of a single-axis tracker (independent for a single row, linked for multiple rows).
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