拉线网球视频教程:if rs.eof then | ASP代码什么意思?

if rs.eof then ASP代码：if rs.eof and rs.bof then if rs.eof then | ASP代码什么意思? if rs.EOF and rs.BOF then if not(rs.eof or rs.bof) then... if not rs.eof then什么意思啊？ n=0 for m=1 to rs.PageSize if rs.EoF then exit for if not rshyk.eof then if rsMenu.bof and rsMenu.eof then [大哥帮我理解一下意思] asp中可不可以“if not……then"