<html><body><div style="color:#000; background-color:#fff; font-family:ËÎÌå, simsun, serif;font-size:10pt"><div>Dear,</div><div><br></div><div>In pwscf program, what's the difference between "vc-md" and "vc-relax"? And what's the difference between "md" and "relax"?</div><div><br></div><div><br></div><div>Thanks for any reply!<br><br>Best wishes!<br><br>wangwei<br>Huaibei Normal University</div><div><br></div><div><br></div><div><br></div></div></body></html>