This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
 Documentation / Mathematica / Other Information / Menu Commands / Help Menu  /
Find in Help...

▪ Find in Help looks up the selected word in the Help Browser.
▪ Type a Mathematica function name or topic in a notebook, select that word, and then choose Find in Help.
▪ Keyboard shortcuts: F1 ; F F