R6.6 is the Xorg base-lineXORG-MAIN

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+
+Scale Widget
+
+Header file 		Scale.h
+Class			scaleWidgetClass
+Class Name		Scale
+Superclass		Simple
+
+The Scale widget is an immutable image displayed within a rectangular
+region of the screen.  When the widget is selected, it is highlighted, 
+and an application callback routine is invoked.  When the
+widget is resized the image can be autoscaled to fit new size of the 
+widget window.  The widget can also cut and paste its contents.
+
+When creating a Scale widget instance, the following resources are
+retreived from the argument list or from the resource database:
+
+All the Simple Widget resources plus...
+-------------------------------------------------------------------------------
+ Name                Cass               Type            Default Value
+-------------------------------------------------------------------------------
+ aspectRatio         AspectRatio        Float           1.0
+ autoscale           Autoscale          Boolean         True
+ bufferSize          BufferSize         Cardinal        1024
+ foreground          Foreground         Pixel           XtDefaultForeground
+ gravity             Gravity            XtGravity       ForgetGravity
+ image               Image              XImage*         NULL
+ internalHeight      Height             Dimension       2
+ internalWidth       Width              Dimension       2
+ pasteBuffer         PasteBuffer        Boolean         False
+ precision           Precision          Float           0.001
+ proportional        Proportional       Boolean         True
+ resize              Resize             Boolean         True
+ scaleX              ScaleFactor        Float           DefaultScaleValue
+ scaleY              ScaleFactor        Float           DefaultScaleValue
+ exponent            Exponent           integer         -3
+-------------------------------------------------------------------------------
+
+ aspectRatio	This resource specifies the aspect ratio of the scaled image
+		in the x / y * aspectRatio = 1 form.  It is effective within
+		the precision resource only if proportional resource is set 
+		to true.  AspectRatio resource can be any positive number 
+		greater than zero.
+
+ autoscale	If this resource is set to True then the image will be
+		autoscaled to fit the window size within internal width
+		and internal height resource values.  If the resource is
+		False, the widget will only reposition the image
+		according to the gravity resource value.
+
+ bufferSize	This resource specifies the buffer size in XRectangle's for
+		buffering the XFillRectangle calls.  It is effective only 
+		for XYBitmap image type.
+
+ background	This resource has the same meaning as for the Simple widget.
+		However, it is worth mentioning that if the most frequent
+		pixel value in the XYPixmap or ZPixmap image is specified
+		as backgroud, the scaling process can be speeded up noticably.
+
+ foreground	The color used to paint the image if in XYBitmap format.
+		If the image is XYPixmap or ZPixmap format, the foreground
+		resource has no effect.
+
+ gravity	This resource will determine where to put the image if it does 
+		not fit the window size minus internal width and height.
+		The widget will try to preserve gravity rather than internal
+		width and height resources.
+
+ image		This is the image to be displayed in the widget window.
+		If no image is desired, the NULL value can be passed.  
+		The passed image is copied and set to the resource value.
+		Applications should destroy the passed image argument
+		if they do not intend to use it at some later time.
+
+ internalHeight	
+ internalWidth	These resources specify the minimum distance from the boarder 
+		of the widget window to be maintanied when manipulating the 
+		image.  If image is too big or small to satisfy given 
+		conditions, the	widget will position the image to preserve 
+		gravity rather than internalWidth or internalHeight.
+
+ pasteBuffer	If this resource is true then the widget owns the paste
+		selection buffer.  This resource can only be queried.
+
+ precision	This resource specifies the precision of the scale factors
+		when scaling the image.  The precision resource can be any 
+		positive number greater than zero. (For example, if precision
+		is 1.0 then the image will be scaled only by integer values.)
+
+ proportional	If this resource is set to true it will make sure that the 
+                image proportions, as specified by aspectRatio resource,
+                are being kept whenever it is scaled.  
+		
+ resize		If this resource is true the widget will try to resize when
+		addopting a new image thus preserveing the scale values.
+		If it is false the scale values will not be preserved unless
+		the image can fit in the current window size with the same
+		scale values.
+
+ scaleX
+ scaleY		These resources specify the scaling values for the widget
+		image.  They will be floored to satisfy precision resource
+		values.  If uniform resource is true the scale values will
+		be only integers.  These resources can be any positive number
+		greater than zero.
+
+ shiftFactor	...