In a Numbers 6.0 file, I keep a list of over 1000 books, CDs and DVDs. The list is alphabetical. Is it possible to create a category for items beginning with "A" and further through the rest of the alphabet so that I can collapse any letter group that I do not want to browse? I don't see this in the options, so I was wondering if I should create a column and somehow use a formula to read the first letter of the title and then use that column to create categories? I can think of this, so I thought I'd ask. Thanks.