al different important kinds of measures appear throughout this
document: inches, centimeters and millimeters, points, and bits per pixel.

<dl>

<dt>Centimeters and millimeters</dt>
<dd>ISO standard paper sizes such as A4 and A3 are commonly represented in
the SI units of centimeters and millimeters.  Centimeters are abbreviated
<dfn><abbr>cm</abbr></dfn>, millimeters <dfn><abbr>mm</abbr></dfn>.  ISO A4 paper is
quite close to 210&times;297 millimeters (approximately 8.3&times;11.7
inches).</dd>

<dt>Inche