Decreases the indent by the size of one tab or inserts the tab.
public class ShiftTabKeyCommand : TabKeyCommand
Public Class ShiftTabKeyCommand Inherits TabKeyCommand
If the whole row in a document is selected, the ShiftTabKeyCommand command decreases the indent of paragraph(s) which contains selected row(s) by the size of one tab. If the selected paragraph belongs to the numbered or bulleted list, the command decrements the indentation level of a paragraph. If less than a row is selected, the command inserts a tab.