Format[expr] prints as the formatted form of expr. Assigning values to Format[expr] defines print forms for expressions. Format[expr, form] gives a format for the specified ...

FormatType is an option for output streams, graphics, and functions such as Text that specifies the default format type to use when outputting expressions.

InterpretationBox[boxes, expr] is a low-level box construct that displays as boxes but is interpreted on input as expr.

TagBox[boxes, tag] is a low-level box construct that displays as boxes but maintains tag to guide the interpretation of boxes on input.

Unicode: F74C. Alias: Esc dd Esc. Compound operator with built-in evaluation rules.  can only be interpreted by default when it appears with ∫ or other integral operators. ∫ ...

InputForm converts the selection to Mathematica InputForm.

StandardForm converts the selection to Mathematica StandardForm.

ToExpression[input] gives the expression obtained by interpreting strings or boxes as Mathematica input. ToExpression[input, form] uses interpretation rules corresponding to ...

TraditionalFunctionNotation is an option for selections that specifies whether input of the form f(x) is interpreted by the kernel as a function or as a product.

These "How tos" give step-by-step instructions for common tasks related to formatting equations and expressions in Mathematica .