anchor.diff:          </ol>
   
   
  -        <p>The ISS is 3D so x, y & z coords must be supplied!</p>
  +        <p>The ISS is 2D so x & y coords must be supplied!</p>
   
           <h4>parameters</h4>
   
  
positive.code:                     <tr>
                          <td>x_value</td>
                          <td><var>String</var></td>
                          <td>false</td>
                          <td>x coordinates of points</td>                
                          <td><var>1.8</var></td>
                      </tr>			
  
negative.code:                     <tr>
                          <td>z_value</td>
                          <td><var>String</var></td>
                          <td>false</td>
                          <td>z coordinates of points</td>                
                          <td><var>1.8</var></td>
                      </tr>            
  