[ns] trace file format..

[hai22 <hai22@it.canterbury.ac.nz>]

Hi,
I have been using following piece of tcl script to trace nrexmitbytes_ 
and nackpack_ .
I do not know the meaning of column number 2 , 3 ,4 and 5 in the file
which trcaes these variables ..
I would be very thankful if some one explains me the meaning of these
columns ...

These columns are different from that produced by trace-all .....
**********************************************************************************
The tcl srcipt I used is :
:
:
set c1 [open tcp1.tr w]
set c2 [open tcp2.tr w]
:
:
$tcp1 attach $c1
$tcp1 trace nrexmitbytes_