Add comment for units for our two new types.

diff --git a/defs.h b/defs.h
index 8203de7cdde7a8eaf0cc2bc85d2492998645595e..781c1aed591152d10f9837db60f03244ee3ff7cc 100644 (file)
--- a/defs.h
+++ b/defs.h
@@ -137,13 +137,14 @@ typedef struct {
        /* 
         * The "thickness" of a waypoint; adds an element of 3D.  Can be
         * used to construct rudimentary polygons for, say, airspace 
-        * definitions.
+        * definitions.   The units are meters.
         */
        double depth;
 
        /*
         * An alarm trigger value that can be considered to be a circle
-        * surrounding a waypoint (or cylinder if depth is also defined)
+        * surrounding a waypoint (or cylinder if depth is also defined).
+        * The units are meters.
         */
        double proximity;