mutiple order fields

The ability to order by mutiple columns would be nice.

For the gui maybe have select boxes next to column headers to pick their order index.

or even allowing only 3 order fields and have 1,2,3 as links next to the coumn headers.

Of course the page will reload after each in the later case but thats not too bad.

asc desc would have to be worked out but it would just be a ui matter for either method. Maybe a image toggle (hidden checkbox ) up and down for each column.