As you can see, your preference data is composed of a set of name->value pairs. The setting names are often "namespaced" with dot ('.') separated words. Many JOSM plugins will store preferences grouped in a namespace.

You can get a similar raw view by viewing this file, but this 'Advanced' preferences panel is intended to provide a easier alternative.

Default location

(expand)

Windows

%APPDATA%\JOSM

Linux

hidden system folder ~/.josm (linux)?

MacOS

Menus

Most of the settings can be reached via menus

• Help/Action/Preferences (see also Help/Keys by menu)

Other preferences

• Help/JOSM interface customization
• Help/Preferences/Advanced

See also

• Help/CommandLineOptions
• Help/Preferences/ImportExport