title: TCL proc for default value assignment
body: <p>What is the syntax for a proc in tcl which automatically takes arguments if user din't give any arg?</p>
  
  <p>I used something like </p>
  
  <pre><code>    proc a {{args 1}} {
      puts $args
      }
  
      a
  </code></pre>
  
  <p>when I used this I dint get my args value as 1. It returns a blank string. Please help me with this.</p>