Forums Developers Tabulation on Window List (-l)

I have created an window with a list:
/window -l @ListFiles

And added lines using $chr(9) to tabulate them:
/aline @ListFiles File1.txt $chr(9) 512kb
/aline @ListFiles File2.txt $chr(9) 738kb
...

Buuuutt.. the widht of collums is so small... about 8 characters..
There is a way in latest version (or future versions) to define a diferent colum widht of Table data?
Also a way to align a colum at right side of window?

Ex:
File1.txt..................................521kb
File2.txt..................................738kb (the dots are only to format in this forum)

And the second colum must stand at right border even when the window is resized...

Sorry for bad english...

/window -l -t10,25,40 @ListFiles

That takes care of different sizes of tabstops, right alignment isn't possible afaik. Not without lots and lots of scripting anyways.