ShowAutoStyles is an option for cells that determines if a style should automatically be applied when input of a specified type is entered into a cell.
The types of input to which a style is applied and the details of the style are specified by the setting for AutoStyleOptions. For example, by default, unmatched delimiters such as brackets are automatically highlighted in purple as you type.
The default setting is ShowAutoStyles True.
See also: AutoStyleOptions, DelimiterFlashTime, and ShowCursorTracker.