code: public void insertPointConstraint(Constraint con, int ... ind)
  	{
  		assert con.getVariableSize() == 1;
  
  		for (int i : ind)
  		{
  			for (int j = 0; j < constraints.size(); j++)
  			{
  				int[] index = constraints.get(j).getInds();
  				if (index[index.length-1] == i)
  				{
  					constraints.add(j + 1, new MappedConst(con, i));
  					break;
  				}
  			}
  		}
  	}
docs: A point constraint deals with only one element in a match, checks its validity. This method
  injects the parameter constraint multiple times among the list of mapped constraints, to the
  specified indexes.
  
  @param con constraint to add
  @param ind indices to add this point constraint