POST /entrez/query.fcgi?CMD=Pager&DB=PubMed HTTP/1.1
Referer: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=Search&DB=PubMed
Accept-Language: en-us
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Host: www.ncbi.nlm.nih.gov
Content-Length: 296
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: LB-Hint-PubMed=0SlUKGwUky2Rn3_3B5G; WebEnv=09ZSqwvMGrYSnbQNfTtbZquWN8EWwljKW624FLtMbtqQuh4E9eSM5k

WebEnv=09ZSqwvMGrYSnbQNfTtbZquWN8EWwljKW624FLtMbtqQuh4E9eSM5k&db=PubMed&orig_db=PubMed&term=box&cmd=&cmd_current=&query_key=4&dopt=DocSum&dispmax=20&sort=&SendTo=Text&textpage=1&inputpage=2&CrntRpt=DocSum&showndispmax=20&page=0&dopt1=DocSum&dispmax1=20&sort1=&SendTo1=Text&textpage1=1&inputpage1=

##</code><code>##

HTTP/1.1 200 OK
Date: Mon, 30 Jun 2003 06:59:19 GMT
Server: Apache
Set-Cookie: LB-Hint-PubMed=0y_fmGJi19Cg5T8fvAR; domain=.nlm.nih.gov; path=/; expires=Mon, 30-Jun-2003 07:04:19 GMT
Set-Cookie: WebEnv=0XdSUuxNcjqgflC3VlxDhofrq5G4V7_aVtA9dsKTtm3Bq-wvz1OM5U; domain=.nlm.nih.gov; path=/; expires=Mon, 30-Jun-2003 14:59:19 GMT
Content-Type: text/html
Via: 1.1 www.ncbi.nih.gov
X-Cache: MISS from www.ncbi.nih.gov
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked

##</code><code>##

WebEnv= <---Same as what's in your cookie, changes every time
db=PubMed
orig_db=PubMed
term=   <---Search term
cmd=
cmd_current=
query_key=  <---Need to extract out of the first page (server seems to enumerate searches...this will eventually get wiped out if you wait too long)
dopt=DocSum
dispmax=20
sort=
SendTo=Text
textpage=   <---Current page numerically
inputpage=  <---Page we're going to
CrntRpt=DocSum
showndispmax=20
page=       <---Page prior to textpage
dopt1=DocSum
dispmax1=20
sort1=
SendTo1=Text
textpage1= <---Always seems to be the same as textpage
inputpage1=