title: tcl error extra characters after close-brace while executing for
body: <pre><code>set ns [new Simulator]
  #open nam file
  set nf [open out.nam w]
  $ns namtrace-all $nf
  #set variables of topology
  set lanNodes 5
  set link("bandwidth") 5mb
  set link("delay") 2ms
  set link("queue") DropTail
  #define two routers
  set router0 [$ns node]
  set router1 [$ns node]
  #link two routers
  $ns duplex-link $router0 $router1 2mb 2ms DropTail
  #create and connect nodes with routers
  for {set i 0}{$i &lt; $lanNodes}{incr i} {
  set n($i) [$ns node]
  set n([expr $i+5]) [$ns node]
  $ns duplex-link $n($i) $router0 $link("bandwidth") $link("delay") $link("queue")
  $ns duplex-link $n([expr $i+5]) $router1 $link("bandwidth") $link("delay") $link("queue")
  }
  proc finish { } {
  global ns nf
  close $nf
  </code></pre>
  
  <p>what is error for this code
  when i want to implemented this code in ns2 write this sentences " extra characters after close-brace while executing for " 
  what is meaning and who can solve this  </p>