大卫科波菲尔英文版:求救：ASP里的语句不懂。帮忙解释下。

<%
if request.querystring("page")="" then
page="1"
else
page=request.querystring("page")
end if
set rs=server.createobject("adodb.recordset")
if session("userno")="" then
sql="select id,title from vote where iswork=true and anonymity=true order by id desc"
else
sql="select id,title from vote where iswork=true order by id desc"
end if
rs.open sql,conn,1,1
if rs.eof then
rs.close
set rs=nothing
conn.close
set conn=nothing
Response.Write("<tr align=center><td ><font color=red>目前没有投票项目</font></td></tr>")
response.end
end if
if not rs.eof then
rs.PageSize = 10
rs.AbsolutePage = clng(page)
if cstr(page)=cstr(rs.PageCount) and (rs.RecordCount mod rs.PageSize <> 0) then
recend=rs.RecordCount mod rs.PageSize
else
recend=rs.PageSize
end if
dim o
o=1
for i=1 to recend
%>

sql="select id,title from vote where iswork=true and anonymity=true order by id desc"
是什么意思呢？ iswork? anonymity? by id dese?

rs.AbsolutePage = clng(page)
if cstr(page)=cstr(rs.PageCount) and (rs.RecordCount mod rs.PageSize <> 0) then
recend=rs.RecordCount mod rs.PageSize
else
recend=rs.PageSize

这些AbsolutePage clng(page) cstr(page) 等等 是什么意思呢贯穿起来？

谢谢！！！^_^ 希望能稍详细点告诉我！谢谢！
整段话又是什么意思呢？理解理解着就糊涂了~~