The -t option is equivalent to an initial tag command, editing the file containing the tag and positioning the editor at its definition. The -r option is used in recovering after an editor or system crash, retrieving the last saved version of the named file or, if no file is specified, typing a list of saved files. The -l option sets up for editing LISP, setting the showmatch and lisp options. The -w option sets the default window size to n, and is useful on dialups to start in small windows. The -R option sets the readonly option at the start.
Name arguments indicate files to be edited.