My group is making a book. We want to use different fonts for different group members pieces. We will use the fonts accepted by Lulu. (Arial, Bookman Old Style, Century, Courier, Garamond, Palatino, Tahoma, Times New Roman, Verdana, Symbols.) In my previous books I used only one font. Can the different fonts be used in one book, or must we all use the same font? We will make it a PDF file.