--- a/scripts/plot/rectangle.m
+++ b/scripts/plot/rectangle.m
@@ -25,15 +25,15 @@
 ## @deftypefnx {Function File} {@var{h} =} rectangle (@dots{})
 ##
 ## Draw rectangular patch defined by @var{pos} and @var{curv}.  The variable
-## @code{@var{pos}(1 : 2)} defines the lower left-hand corner of the patch
-## and @code{@var{pos}(3 : 4)} its width and height.  By default the value of
-## @var{pos} is @var{[0, 0, 1, 1]}.
+## @code{@var{pos}(1:2)} defines the lower left-hand corner of the patch
+## and @code{@var{pos}(3:4)} defines its width and height.  By default, the
+## value of @var{pos} is @code{[0, 0, 1, 1]}.
 ##
 ## The variable @var{curv} defines the curvature of the sides of the rectangle
-## and it can be a scalar or two-element vector with values between 0 and 1.
-## A value of 0 represents no curvature of the side, where as a value of 1
-## means that the rectangular side is entirely curved into an arc of a circle.
-## If curvature is a two-element vector, then the first element is the 
+## and may be a scalar or two-element vector with values between 0 and 1.
+## A value of 0 represents no curvature of the side, whereas a value of 1
+## means that the side is entirely curved into the arc of a circle.
+## If @var{curv} is a two-element vector, then the first element is the 
 ## curvature along the x-axis of the patch and the second along y-axis.
 ##
 ## If @var{curv} is a scalar, it represents the curvature of the shorter of the
@@ -41,7 +41,7 @@
 ## by
 ##
 ## @example
-## min (pos (1: 2)) / max (pos (1:2)) * curv
+## min (pos (1:2)) / max (pos (1:2)) * curv
 ## @end example
 ##
 ## Other properties are passed to the underlying patch command.  If called