If this property is set to a value larger than that of the End property, the End property is set to the same value as that of Start property.
Selection, Range, and Bookmark objects have starting and ending character positions. The starting position refers to the character position closest to the beginning of the story.
This property returns the starting character position relative to the beginning of the story. The main text story (wdMainTextStory) begins with character position 0 (zero). You can change the size of a selection by setting this property.