With <i>type of motion</i> you specify the number of sites for jumps on the cone. It is assumed that
all jumps occur instantaneously between these sites. If you choose
a 4- or 6-site jump, the jump angle &varphi; is fixed and set to 90<sup>o</sup> or 60<sup>o</sup> respectively. In the other cases (2-site or 3-site jumps) you can use any value.  
The actual positions of the sites depend on the choice of the x- and y-axes of the cone axes system (see topic &DoubleRightArrow; <a href="javascript:help('conemodel','Cone Model')">Cone Model</a>). Weblab uses the convention that the x-axis is symmetrical to all sites, leading to the following assignments for the site positions: 

<table> <tr><td>
 <center>
 <table id="sites">
 <tr><td>2-site</td><td><img src=help/images/sites-1.png></td></tr>
 <tr><td>3-site</td><td><img src=help/images/sites-2.png></td></tr>
 <tr><td>4-site</td><td><img src=help/images/sites-3.png></td></tr>
 <tr><td>6-site</td><td><img src=help/images/sites-4.png></td></tr>
 </table>
 </center>
</td><td id="conus">
<img src=help/images/conus-2sites.png>
</td></tr> </table>
<p>
The option <i>1-site</i> is usefull in combination with a (homogeneous) distribution of jump angles. It is not available in basic mode.
<p>
<i>Rotation</i> can be used if you want to study a free rotation of a segment. This option is activated only in <i>fast limit</i>, where it is treated like a 3-site jump with equal jump angles and populations.