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0005 <span class="comment">% Author: William Coombs</span>
0006 <span class="comment">% Date:   23/01/2019</span>
0007 <span class="comment">% Description:</span>
0008 <span class="comment">% Function to determine the external forces at nodes based on body forces</span>
0009 <span class="comment">% and point forces at material points.</span>
0010 <span class="comment">%</span>
0011 <span class="comment">%---------------------------