Wolfram Language & System 10.0 (2014)|Legacy Documentation

This is documentation for an earlier version of the Wolfram Language.View current documentation (Version 11.2)


clears values and definitions for the .

clears values and definitions for all symbols whose names match any of the string patterns .


  • Clear does not clear attributes, messages, or defaults associated with symbols.
  • Clear allows abbreviated string patterns containing the following metacharacters:
  • *zero or more characters
    @one or more characters, excluding uppercase letters
    \\*, etc.literal *, etc.
  • Clear["context`*"] clears all symbols in a particular context.
  • Clear is HoldAll.
  • Clear does not affect symbols with the attribute Protected.
Introduced in 1988