I don't know if this is possible (I've been looking online since last night for an answer and cannot find one), but:
I would like to add Grid Lines / Column Lines between my various columns in my Calibre program. 
I've attached an image when I photoshopped in a line between Titles and Authors to show what I would like to do.
Can one do this? If so,
how does one do this?
P.S. After I posted, I did finally find another post where it says this can be done in Preferences/Look & Feel -- BUT I cannot find in L&F where to do this!
THANKS.
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