Hello, everyone, i have a Q the class SRMErrorModel, there are 3 parameters for its method "drop-packet $1 $2 $3", what do the parametrs's mean? how to use them? e.g. i see such lines from an example script in tcl/ex set loss_module {new SRMErrorModel] $loss_module drop-packet 2 200 1 BTW, i could not find the answer in ns documentation. Thanks! yan