Specifies the value corresponding to a scrollbar's start position.Syntax:
set the startValue of <scrollbar> to <number>
Examples:
set the startValue of scrollbar "Progress" to 1
Use the startValue and endValue properties to set the scale of the scrollbar.
The startValue is the value of the thumbPosition when the scrollbar thumb is all the way to the top (for a vertical scrollbar) or left (for a horizontal scrollbar).
See also: scrollbarLineInc (message),scrollbarBeginning (message),scrollbar (object),endValue (property),properties (property),thumbSize (property),thumbPosition (property),