http://docbook.sourceforge.net/release/dsssl/current/doc/print/indent-screen-lines.html
If not #f, each line in the display will be indented with the content of this variable.
(define %indent-screen-lines%
;; Indent lines in a 'Screen'?
(define %indent-screen-lines%
;; Indent lines in a 'Screen'?
+ ;; "#f" or string to be used as the indent on 'screen'
+ "")
(define %callout-fancy-bug%
;; Use fancy callout bugs?
(define %callout-fancy-bug%
;; Use fancy callout bugs?