<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px"><div id="yui_3_16_0_1_1455695738662_2735">Dear Prof. Fecher,</div><div id="yui_3_16_0_1_1455695738662_2735">Thanks for reply.</div><div id="yui_3_16_0_1_1455695738662_2735">I know FORTRAN as i can write some programs.</div><div id="yui_3_16_0_1_1455695738662_2735">Yes. it is clear that mini calls haupt subroutine and haupt calls ......</div><div id="yui_3_16_0_1_1455695738662_2735">But, I would like to know background of them.</div><div id="yui_3_16_0_1_1455695738662_2735">Why we call this program/subroutine and what this program do.</div><div id="yui_3_16_0_1_1455695738662_2735"><br></div><div id="yui_3_16_0_1_1455695738662_2735">Sincerely,</div><div id="yui_3_16_0_1_1455695738662_2735">Amir </div></div></body></html>