nomenclature cross_axis_slope redaction

Co-Authored-By: Cliff Hansen <[email protected]>

Author: echedey-ls

docs/sphinx/source/user_guide/extras/nomenclature.rst

@@ -51,10 +51,9 @@ There is a convention on consistent variable names throughout the library:
 
     cross_axis_slope
         Cross-axis slope angle. [°]
-        The angle, relative to horizontal, of the line formed by the
-        intersection between the slope containing the tracker axes and a plane
-        perpendicular to the tracker axes. Cross-axis slope should be specified
-        using a right-handed convention.
+        The angle, relative to tracker coordinate system horizontal, of the line between
+        the axes of two adjacent trackers, in the plane perpendicular to the tracker axes.
+        Cross-axis slope should be specified using a right-handed convention.
 
         For example, trackers with axis azimuth of 180° (N-S rotation axis)
         will have a negative cross-axis slope if the tracker axes plane slopes