Variable: Man-untabify-command
Man-untabify-command is a customizable variable defined in man.el.gz.
Value
"pr"
Documentation
Program used by man for untabifying.
Source Code
;; Defined in /usr/src/emacs/lisp/man.el.gz
(defcustom Man-untabify-command "pr"
"Program used by `man' for untabifying."
:type 'string)