BeginPackage
 Usage
• BeginPackage["context`"] makes context` and System` the only active contexts.
• BeginPackage["context`", {" `", " `", ... }] calls Needs on the  .
Notes
• BeginPackage is typically used at the beginning of a Mathematica package. • The interpretation of symbol names depends on context. BeginPackage thus affects the parsing of input expressions. • New in Version 1.
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