Important question
It has some relation with other topic on the list
http://thread.gmane.org/gmane.emacs.orgmode/20780/focus=20857
2009/12/21 Markus Heller :
> Hello all,
>
> please consider the following scenario:
>
> I have a contract with Client A; the contract is valid from January 1, 2010
>
Hello all,
please consider the following scenario:
I have a contract with Client A; the contract is valid from January 1,
2010 until March 31, 2010. I want to clock all my work on tasks under
this contract, and of course *only* while the contract is valid. 30
days before the expiry date, I'
