To determine the spine width of a book,  yo u divide the paper PPI into the number of pages in the book. An example is a 250 page book using Plainfield opaque 50# smooth which has a PPI of 526. Divided  250 by 526 which equals  a spine width of . 4752". In this case, you would use the .5” spine. Now select the Spine width for the  book and hide the others:  Special>Conditional  Text>Show/Hide>SpineSize(-->Hide:) >S et  . Move the changed Conditional text settings to all files in your book by opening the book file with the spine.fm still open and  File>Import>Formats  the  Conditional Text Settings (ONLY!)  to the boo k files. Draft Document for Review Februa ry 7, 2020 3:15  pm 8464spine.fm 945 IBM TS7700 Release 5.0  Guide SG24-8464-00 ISBN 0738458325 (1.5” spine) 1.5”<-> 1.998” 789 <->1051 pages