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-rw-r--r--src/tilehighlight_type.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/tilehighlight_type.h b/src/tilehighlight_type.h
index e662aa965..291b950d4 100644
--- a/src/tilehighlight_type.h
+++ b/src/tilehighlight_type.h
@@ -27,8 +27,8 @@ enum HighLightStyle {
HT_LINE = 0x008, ///< used for autorail highlighting (longer streches), lower bits: direction
HT_RAIL = 0x080, ///< autorail (one piece), lower bits: direction
HT_VEHICLE = 0x100, ///< vehicle is accepted as target as well (bitmask)
- HT_DIAGONAL = 0x200, ///< Also allow 'diagonal rectangles'.
- HT_DRAG_MASK = 0x0F8, ///< masks the drag-type
+ HT_DIAGONAL = 0x200, ///< Also allow 'diagonal rectangles'. Only usable in combination with #HT_RECT or #HT_POINT.
+ HT_DRAG_MASK = 0x0F8, ///< Mask for the tile drag-type modes.
/* lower bits (used with HT_LINE and HT_RAIL):
* (see ASCII art in table/autorail.h for a visual interpretation) */