[det]directory_index(+Dir, 
:Options)//Show index for a directory. Options processed:
- order_by(+Field)
 - Sort the files in the directory listing by Field. Field 
is one of 
name (default), size or time. 
- order(+AscentDescent)
 - Sorting order. Default is 
ascending. The alternative is
descending 
- name(:RenderName)
 - DCG used to render a name in the table. The File is passed.