This is documentation for Mathematica 7, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
Standard Namespaces
Mathematica allows arbitrary hierachical namespaces. However, several standard "contexts" are conventionally used for predefined purposes.
System` the context for system-defined symbols
Global` the default context for user-defined symbols
    
package` the conventional context for public symbols in a package
package`Private` the conventional context for private symbols in a package
    
$CellContext` placeholder for the context of a symbol inside Dynamic
Cell$n`, Notebook$n` unique contexts generated for cells or notebooks
    
Developer` built-in symbols intended for advanced package development
Experimental` symbols introduced in a particular version for experimental purposes
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