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 Documentation / Mathematica / Built-in Functions / Input and Output / Format Types  /

  • 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 form of output.
  • Standard forms for formatted output are:
  • You can add your own forms for formatted output.
  • Example: Format[ s ] := rhs defines a symbol s to print like rhs.
  • Format[ f [ ... ]] := rhs defines a function f to print like rhs.
  • Definitions for Format are stored in the FormatValues of a symbol.
  • If you specify a new output format for an expression by giving a definition for Format, there is no guarantee that Mathematica will be able to interpret this output format if it is used as input.
  • Definitions given for Format are used before those given for MakeBoxes.
  • See the Mathematica book: Section 2.8.16.
  • See also: ToString, ToBoxes, MakeBoxes, MakeExpression.