@Chapter
    @Title { Changing the Overall Format }
    @Tag { changes }
@Begin
@LP
The symbols of Lout make many decisions behind the scenes.  Even the
humble @Code "@PP" symbol has to decide how much vertical space to
leave, and how far to indent the first line of the paragraph.  How to
change these decisions is the subject of this chapter.
@BeginSections
@Include { fmt_setu }
@Include { fmt_size }
@Include { fmt_marg }
@Include { fmt_head }
@EndSections
@End @Chapter