This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
 BUILT-IN MATHEMATICA SYMBOL

# Verbatim

 Verbatim[expr]represents expr in pattern matching, requiring that expr be matched exactly as it appears, with no substitutions for blanks or other transformations.
• Verbatim[x_] will match only the actual expression x_.
• Verbatim is useful in setting up rules for transforming other transformation rules.
• Verbatim[expr] does not maintain expr in an unevaluated form.
Match any expression:
Match only the pattern x_:
Changes the pattern only when it is explicitly:
Match any expression:
 Out[1]=
Match only the pattern x_:
 Out[2]=
 Out[3]=

Changes the pattern only when it is explicitly:
 Out[1]=
 Scope   (1)
Transform a rule into a list of rules with special cases:
This rule transforms an expression into its square:
Use Verbatim to make rules specific for number types:
The list of specific rules only transforms integers, reals, and rationals:
New in 3