thufir@dur:~/NetBeansProjects/spawnTelnet/telnet$
thufir@dur:~/NetBeansProjects/spawnTelnet/telnet$ tclsh main.tcl
invalid command name "lpop"
    while executing
"lpop cities "
    (procedure "cities::listCities" line 9)
    invoked from within
"cities::listCities"
    invoked from within
"set cities [cities::listCities]"
    (file "main.tcl" line 8)
thufir@dur:~/NetBeansProjects/spawnTelnet/telnet$