Another tcl question

From: mike l (thuang2_at_hotmail.com)
Date: 11/30/03 

Date: Sat, 29 Nov 2003 20:55:06 -0500

Hi,

I was reading a snippet of tcl code. Something I
don't quite understand.

  $c bind tag <1> {
     set item [%W find withtag current]
     set a(tag) [%W itemcget $item -text]
     ...
  }

In the code, <1> is a sequence number. But what is it
for? What is 'withtag' for? What is 'current'? What does
this piece of code do? Thanks a lot!

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