This is documentation for Mathematica 5, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)

Documentation / Mathematica / Front End / Menu Commands / File Menu /

Palettes

FilledSmallSquare Palettes lists currently available palettes.

FilledSmallSquare Palette files are kept in SystemFiles/FrontEnd/Palettes. Palette files added to this subdirectory will be listed in the menu when you restart Mathematica.

FilledSmallSquare See The Mathematica Book: Section 1.3.6.