KHTML
is 
  The CSSPageRule interface represents a page rule  within a CSS style sheet.
The used to specify the dimensions, orientation, margins, etc. of a page box for paged media. 
This file is part of the KDE documentation.
Documentation copyright © 1996-2014 The KDE developers.
Generated on Tue Oct 14 2014 22:51:22 by doxygen 1.8.7 written by Dimitri van Heesch, © 1997-2006
            Documentation copyright © 1996-2014 The KDE developers.
Generated on Tue Oct 14 2014 22:51:22 by doxygen 1.8.7 written by Dimitri van Heesch, © 1997-2006
KDE's Doxygen guidelines are available online.
    KDE API Reference