Answered Page Routing as 'folder/subfolder/file' style ?

Is it possible to make page routing in MODX as in file system's folders?

I mean this:

i have a container resource with alias 'folder',
i also have a non-container resource with alias 'file'.
i have set 'folder' as 'file's parent.

now, when i open 'folder/file.html' it can not find it and is waiting for 'file.html'.
it seems very strange to me.
what is the 'parent' setting is then for???

i want to open 'file' alias as 'folder/file.html', not as 'file.html'.

how can i do this?

thanks.