So what if Konqueror and other file managers can be made to behave like dual pane file managers That s not their normal read preset mode of operation that s why they probably shouldn t fall into that category Dual pane behaviour is part of Konqueror s functionality not its whole functionality You can play text mode Tetris from within Emacs Would you categorize Emacs as a Tetris clone As for your conveniently abridged definition of orthodox dual pane file managers are not traditional in any possible meaning of the word if there s any tradition in file management that s either the shell or spatial file management la classic Macintosh Finder They certainly aren t customary nowadays nor are they more generally accepted than other approaches So it actually sounds like you re making my point for me there Besides the etymological read original definition of orthodox is having the right opinion which of course is crazy when applied to any kind of software But again you re missing the point as I ve already told you the only criteria to keep into consideration is USAGE OF THE TERM in qualified circles