BUILT-IN MATHEMATICA SYMBOL

EndPackage

restores $Context and $ContextPath to their values before the preceding BeginPackage, and prepends the current context to the list $ContextPath.

Commands to define a simple package:

Modify the context and context path so that symbol creation and lookup use

:

Here are the commands defining the function in the package:

Restore the context, but leave

on the context path for symbol lookup:

The context is now the same as the original:

The context path is the same as the original, but with

prepended:

Commands to define a simple package:

Out[1]=

Modify the context and context path so that symbol creation and lookup use

:

Here are the commands defining the function in the package:

Restore the context, but leave

on the context path for symbol lookup:

The context is now the same as the original:

Out[7]=

The context path is the same as the original, but with

prepended:

Out[8]=

Use BeginPackage and EndPackage to start and end a package in a file:

The package can be loaded with Get:

Once loaded, the definitions work: