%browse [-n|--new-window] directory : opens the specified directory in jEdit's file system browser. If -n or --new-window is specified, opens a new floating instance of the file system browser.

%edit files ... : opens the specified files in jEdit.

%run scripts ... : runs the specified script files. You can run BeanShell scripts, or any script type supported by an installed plugin (for example you can run Python scripts if JythonInterpreter is installed).