Design mini-lanugage for data input

[aurora]

P.S. Also it is a 'mini-language' because it is an ad-hoc design that is  
good enough and can be easily implemented for a given problem. This is  
oppose to a general purpose solution like XML that is one translation from  
the original data format and carries too much baggages.

> Just consider you don't have to enter two quotes for every string object  
> is almost liberating. These quotes are only artifacts for structured  
> data format. The idea to design a format convenient for human and let  
> code to parse and built the data structure.
>
> wy