ILP83-Correcting discrepancy in code comments found on final check

@@ -451,7 +451,7 @@
             <elem name="direction" type="float32" multiplicity="1">
                 <tag name="unit" value="degrees"/>
                 <comment>
-                    Angle between north and start of arc.\n
+                    Angle from north to center of arc.\n
                     0 &lt;= direction &lt; 360
                 </comment>
             </elem>