Unable to turn off file browser icons

Although I know this is not the real bug, I consider it
that way. I badly lack a way to turn the file browser
icons off. I mean those icons next to dir/file name
that appears in the tree. Without them the whole list
would be more compact and more items woudl fit in the
view. I doubt user of jedit are that stupid to not
being able to differ dir from file w/o extra icon ;)