diff --git a/pyqtgraph/graphicsItems/ROI.py b/pyqtgraph/graphicsItems/ROI.py
index 84a8d0bd..a710f808 100644
--- a/pyqtgraph/graphicsItems/ROI.py
+++ b/pyqtgraph/graphicsItems/ROI.py
@@ -1102,9 +1102,9 @@ class ROI(GraphicsObject):
             return bounds, tr
 
     def getArrayRegion(self, data, img, axes=(0,1), returnMappedCoords=False, **kwds):
-        """Use the position and orientation of this ROI relative to an imageItem 
+        r"""Use the position and orientation of this ROI relative to an imageItem
         to pull a slice from an array.
-        
+
         =================== ====================================================
         **Arguments**
         data                The array to slice from. Note that this array does
@@ -1524,9 +1524,9 @@ class TestROI(ROI):
 
 
 class RectROI(ROI):
-    """
+    r"""
     Rectangular ROI subclass with a single scale handle at the top-right corner.
-    
+
     ============== =============================================================
     **Arguments**
     pos            (length-2 sequence) The position of the ROI origin.
@@ -1586,11 +1586,13 @@ class LineROI(ROI):
         
 
         
+
+
 class MultiRectROI(QtGui.QGraphicsObject):
-    """
-    Chain of rectangular ROIs connected by handles. 
-    
-    This is generally used to mark a curved path through 
+    r"""
+    Chain of rectangular ROIs connected by handles.
+
+    This is generally used to mark a curved path through
     an image similarly to PolyLineROI. It differs in that each segment
     of the chain is rectangular instead of linear and thus has width.
     
@@ -1724,12 +1726,12 @@ class MultiLineROI(MultiRectROI):
         MultiRectROI.__init__(self, *args, **kwds)
         print("Warning: MultiLineROI has been renamed to MultiRectROI. (and MultiLineROI may be redefined in the future)")
 
-        
+
 class EllipseROI(ROI):
-    """
+    r"""
     Elliptical ROI subclass with one scale handle and one rotation handle.
-    
-    
+
+
     ============== =============================================================
     **Arguments**
     pos            (length-2 sequence) The position of the ROI's origin.
@@ -1810,8 +1812,9 @@ class EllipseROI(ROI):
         return self.path
         
         
+
 class CircleROI(EllipseROI):
-    """
+    r"""
     Circular ROI subclass. Behaves exactly as EllipseROI, but may only be scaled
     proportionally to maintain its aspect ratio.
     
@@ -1878,13 +1881,13 @@ class PolygonROI(ROI):
         sc['angle'] = self.state['angle']
         return sc
 
-    
+
 class PolyLineROI(ROI):
-    """
+    r"""
     Container class for multiple connected LineSegmentROIs.
-    
+
     This class allows the user to draw paths of multiple line segments.
-    
+
     ============== =============================================================
     **Arguments**
     positions      (list of length-2 sequences) The list of points in the path.
@@ -2076,9 +2079,9 @@ class PolyLineROI(ROI):
 
 
 class LineSegmentROI(ROI):
-    """
+    r"""
     ROI subclass with two freely-moving handles defining a line.
-    
+
     ============== =============================================================
     **Arguments**
     positions      (list of two length-2 sequences) The endpoints of the line