Given that we cannot anything on fortran standards, wouldn't it be less 
bewildering to adopt for "cards" the same convention that the fortran standards 
makes up adopt for namelists? (or at least, allow the absent-minded user to use 
both exclamation marks and hashes in "cards"? Just a thought ... S.

On Dec 8, 2012, at 9:45 AM, robinshy wrote:

> Thank you so much for your response, Paolo! It is so helpful to me and I 
> think this problem will be incoutered in the future for other users!
>  
> Robin Huang
> Department of Physics , Tongji University
> No.1239, Siping Road, Shanghai, China
> 2012-12-08
> robinshy
> ????Paolo Giannozzi
> ?????2012-12-08 16:15
> ???Re: [Pw_forum] from read_namelists : error # 17
> ????"PWSCF Forum"<pw_forum at pwscf.org>
> ???
>  
>  
> On Dec 8, 2012, at 8:43 , Stefano Baroni wrote: 
> > I've never seen hash keys used in namelists the way you do. What   
> > are they intended for? 
> > 
> comments. In "cards", you can introduce a comment by setting a hash   
> as first character. 
> Unfortunately namelists follow a different logic: comments are   
> introduced by a "!", exactly 
> as in fortran code. I realized a few days ago that this piece of   
> information wasn't written 
> anywhere in the documentaton 
>  
> P. 
> --- 
> Paolo Giannozzi, Dept of Chemistry&Physics&Environment, 
> Univ. Udine, via delle Scienze 208, 33100 Udine, Italy 
> Phone +39-0432-558216, fax +39-0432-558222 
>  
>  
>  
>  
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---
Stefano Baroni -  http://stefano.baroni.me, stefanobaroni (skype)
on leave of absence from SISSA, Trieste, presently at the Department of 
Materials, EPF Lausanne (until March 2013)

I believe in the despotism of human life and happiness against the liberty of 
money and possessions - John Steinbeck






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