You can draw a force vector by clicking at a point on the screen or by typing the i, j components of the force vector and clicking the Draw button. The force vector
drawn on the screen is also written on the text area in their mathematical representation. When you click the Resultant button, the resultant forces are calculated and
displayed.

     R0 is the resultant of forces P0 and P1
     R1 is the resultant of forces P0, P1 and P2
     R2 is the resultant of forces P0 , P1, P2 and P3 and so on

The resultant forces are written on the text area also. The Clear button let you clear the screen and start all over again.