• SpanSymmetric is an option for cells that determines if an expression enclosed between spanning characters is adjusted to appear more symmetric.
• Certain types of expressions can appear asymmetric when enclosed by spanning characters. An example is fractions in which the numerator is much more complex than the denominator (or vice versa). With the default setting SpanSymmetric True, the size of the spanning characters above and below the axis of the fraction are adjusted to be equal, giving the expression a more symmetric appearance. For example, . • With the setting SpanSymmetric False, the size of the spanning characters is not adjusted. For example, .
True, the size of the spanning characters above and below the axis of the fraction are adjusted to be equal, giving the expression a more symmetric appearance. 
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