<div>hello all:</div>
<div>i have a foolish question .in my scratch,there are a lot of files which suffixes are such bar1,</div>
<div>bar2,com1,com2, dvkb31,dvkb32,dwf1,dwf2,ebar1,.ebar2........and file folder *.save.</div>
<div>these cost much space .so my question is which of these are useless </div>
<div>after finish computing ,</div>
<div>which can be canceled ?</div>
<div> </div>
<div>hope your help .thanks <br clear="all"><br>-- <br>Xu Yuehua<br>physics Department of Nanjing university<br>China </div>