Can Books (and Inventory) darken the rows for voided documents?
I find myself wanting there to be an overt and clearly unmistakable indication (e.g. a notably darker background) to show that a document has been voided in the system so that I can disregard the row entirely without it any more attention than would otherwise be needed... the idea being that it would allow you to scan through documents quickly and only have to put my attention toward those that are actually relevant.