DocumentationMathematicaBuilt-in FunctionsInput and OutputMessages
$MessagePrePrint is a global variable whose value, if set, is applied to expressions before they are included in the text of messages.
The default value of $MessagePrePrint is Short.
$MessagePrePrint is applied after each expression is wrapped with HoldForm.
See Section 2.9.21 and Section 2.14.1.
See also: $PrePrint.
New in Version 2.