This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
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Help...

▪ Help opens the Mathematica Help Browser.
▪ The Help Browser lets you access a wide range of notebooks and other material to get help while you are using Mathematica.
▪ See the Mathematica book: Section 1.3.8, and Section 1.3.9.