pe (e.g., rbox 10 | qhull),
or the '<a href=qh-optt.htm#TI>TI</a>' option (e.g., qhull TI data.txt).

<p>Comments start with a non-numeric character.  Error reporting is
simpler if there is one point per line.  Dimension
and number of points may be reversed.  For halfspace intersection,
an interior point may be prepended (see <a href=qhalf.htm#input>qhalf input</a>).

<p>Here is the input for computing the convex
hull of the unit cube.  The output is the normals, one
per facet.</p>

<blockquote>
    <p>rbox