Yes, this really helped a bunch.
I just ran into trouble when commenting out section "ns_section ns/server/${server}/module/nssock". So I suppose that wasn't optimal (when using the chat package)
If one wants to run another virtual server on another port (8080) just add to frontend.tcl:
------------------------------------------------
source service1.tcl
#set ns/servers in the backend file service1.tcl
#ns_section ns/servers
#ns_param service1 "Development site"
ns_section ns/modules
ns_param nssock8080 ${bindir}/nssock.so
ns_section ns/module/nssock8080
ns_param port 8080
ns_param hostname mydomain.nl
ns_param address 0.0.0.0
ns_param maxinput [expr 8000 * 1024]
ns_param timeout 120
ns_section ns/module/nssock8080/servers
ns_param service1 mydomain.nl:8080
