title: How do I unadd a not yet committed file I have added?
body: <p>I typed in hg add and I am brand new to mercurial and the result of this was a bunch of dll's exe's pdb's etc all got added
  Nothing's been committed yet and I basically want to undo the add. 
  the documentation for hg forget is not very clear not sure if that is want I want
  How do I undo the add before the next commit  </p>
  
  <p>I do have some real files that need adding so after I can undo the add I will use add with the exclude flag<br>
  Thanks </p>