<html dir="ltr"><head><style id="axi-htmleditor-style" type="text/css">p { margin: 0px; }</style></head><body style="font-size: 10pt; font-family: Arial; background-image: none; background-repeat: repeat; background-attachment: fixed;">​dear Gavin<div>Thank a lot for your reply.</div><div><br></div><div>But i have an question. Sometimes there are more than one gap in DOS. Now which gap must be considered as separation gap (i.e separate of valence and semi-core) or esepar0.Can the value of energy that mentioned in scf2 as "<span style="font-family: courier, 'courier new', monospace; font-size: 14px; line-height: 19.6000003814697px; white-space: pre-wrap; background-color: rgb(255, 255, 255);">Energy to separate low and high energystates: -1.200" be considered as a criteria to find this gap.I mean the gap after this value be as a esepar0.</span></div><div><span style="font-family: courier, 'courier new', monospace; font-size: 14px; line-height: 19.6000003814697px; white-space: pre-wrap; background-color: rgb(255, 255, 255);"><br></span></div><div><span style="font-family: courier, 'courier new', monospace; font-size: 14px; line-height: 19.6000003814697px; white-space: pre-wrap; background-color: rgb(255, 255, 255);">thank you in advanse.</span></div></body></html>