Removes indents from the selected text by the specified number of indentation levels.
document.selection.UnIndent( [ nCount ] );
document.selection.UnIndent [ nCount ]
Optional. Specifies the number of indentation levels. The default is 1. If negative, the method acts like the Indent Method. If 0, the method acts like 1.
Supported on EmEditor Professional Version 4.00 or later.
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