Update README.md

README.md

@@ -130,13 +130,14 @@ Road signals are handled as helpers, so they will disappear when the helpers are
 
 ### Road objects
 
-When opening an OpenDrive description file with road objects, these signals will be imported and displayed on the screen, as shown in the following figure:
+When opening an OpenDrive description file with road objects, these objects will be imported and displayed on the screen, as shown in the following figure:
 
 <img src="Help/images/road_objects.png" alt="Display of the road objects on screen" width="539" height="417">
 
 Only the bounding box or bounding cylinder of the objects is shown on screen.
 
 To create a new road object:
+
 * Click the new object tool button in the Creation panel.
 * The default information for the new road object will be shown in the Settings panel on the right.
 * A representation of the road signal will also appear on the display screen if any of the bounding boxes is defined.
@@ -145,6 +146,14 @@ When the OpenDrive file is saved, the information for the new objects will be al
 
 Road objects are handled as helpers, so they will disappear when the helpers are disabled.
 
+#### Parking Slots
+
+The parking slots are a special type of objects. Parking slots are defined by a bounding box (ignoring the height parameter) and have an optional front, rear, left and/or right road mark to indicate its boundaries. Parking slots are represented as shown in the next image.
+
+<img src="Help/images/parking_perpendicular.png" alt="Display of the road signals on screen" width="562" height="326"> <img src="Help/images/parking_parallel.png" alt="Display of the road signals on screen" width="207" height="552">
+
+Although they are objects, they do not disapear when helpers are disabled, or when a screenshot is taken.
+
 ### Take a screenshot
 
 The screenshot feature has been modified to generate a fixed size picture of the road. At the moment it is no possible to changes the default picture size, which is 7000x7000.