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					Originally Posted by dmapr  Not sure. There's a Calibre Manual  but adding a column is super simple. Right click the columns row and choose "Add your own column" from the menu, then follow the prompts.
 
I have a similar setup to the one JSWolf described and some saved searches that help me track which unread books are not on the reader. | 
	
 Yes, I've added several columns myself, I was just wondering whether the read/unread status had to be entered manually, or could be derived somehow, the way the percentage read is