I'd like to know when I modify the list of colums displayed on the right of a filename by using Options of files : Colums of file, is it for the current folder and under-folders or for all the folders from the root ?
So, in the last case, is it possible to apply these modifications only for the current and underfolders ?
Have a read through the Folder Formats FAQ if you haven't already. Let us know if you're still unsure about this afterwards.
(I think editing the columns directly in the lister will edit the thing described under "Changes to the Default Formats" in the FAQ. The FAQ also describes how to make this change permanently and for all folders below a certain point.)