<html dir=""><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 <br> <br>On what you said about clmextrapol_lapw when only lattice parameter is changed ( i mean the procedure that you mentioned):<br> I read somewhere, that after run save_lapw , just changing the lattice parameter to new one and running run_lapw, is sufficient. I do that and the new lattice parameter converge very fast. Now i am not sure about the results. Is this method correct and is the result valid?<br><br>Sincerely. <br></body></html>