Re-add formatting markers

Signed-off-by: Reinhard Biegel <reinhard.biegel@in-tech.com>

Author: ReinhardBiegelIntech

osi_referenceline.proto

@@ -128,22 +128,22 @@ message ReferenceLine
     // Example:
     // \image html OSI_ReferenceLine1.svg "S, T calculation"
     //
-    // This shows a reference line (consisting of three points R0, R1 and R2)
-    // and two points (P1 and P2) not part of the reference line.
-    //
-    // Calculation of ST for P1:
-    // - Calculate the intersection point I of the T axes of R0 and R1.
-    // - As P1 lies in the sector defined by these T axes it is considered part
-    //   of the reference line section between R0 and R1.
-    // - The point P1 is projected onto the line segment [R0, R1] via the
-    //   straight line through I (by calculating the intersection of the line
-    //   segment and the projection axis), resulting in point P1_proj.
+    // This shows a reference line (consisting of three points \c R0, \c R1 and
+    // \c R2) and two points (\c P1 and \c P2) not part of the reference line.
+    //
+    // Calculation of ST for \c P1:
+    // - Calculate the intersection point \c I of the T axes of \c R0 and \c R1.
+    // - As \c P1 lies in the sector defined by these T axes it is considered part
+    //   of the reference line section between \c R0 and \c R1.
+    // - The point \c P1 is projected onto the line segment [\c R0, \c R1] via the
+    //   straight line through \c I (by calculating the intersection of the line
+    //   segment and the projection axis), resulting in point \c P1_proj.
     //   If the T axes are parallel, projection is applied in the direction of
     //   these axes.
-    // - The S coordinate of P1 is the S coordinate of P1_proj
-    // - The T coordinate of P1 is the signed Euclidean distance to P1_proj.
+    // - The S coordinate of \c P1 is the S coordinate of \c P1_proj
+    // - The T coordinate of \c P1 is the signed Euclidean distance to \c P1_proj.
     //
-    // Calculation of P2 follows the same pattern.
+    // Calculation of \c P2 follows the same pattern.
     //
     // The sampling of the polyline must be chosen such that the error
     // when converting coordinates is "small enough". The exact needed