title: How do I use the eval statement in tcl
body: <p>So basically in my tcl script I generate a line of tcl code that I have to execute( ie I come up with this instruction during runtime). Once I have the tcl instruction say for example puts "hello world $test_var". How do I execute this using tcl?</p>
  
  <p>Do I use the eval command or what?</p>