Virtual libraries are created from the Main library by establishing
a set of CONDITIONS that must be met.
Typically those fall into 2 categories:
OR or
AND
ex.
I have a VL 'To Read' that requires: formats:true
and #read:false
(My library contains
Empty Books, that document my paper Library and my wishlist )
I also have a VL 'Poor or None'
formats:false
or #usertags
oor
(... whatever, I still need to clean up ridiculous font-size, huge margins...)
Bottom line, you need to AND another condition to hide the book.
AND NOT a_condition can be used
