Originally Posted by Gerlyn
This is a fixed layout, if you open the file in the iBooks, you are not given the option to change the text size only to lighten or darken the screen.
That is not the definition of fixed layout. That is just making use of potential bugs in iBooks. Please read up on the fixed layout format. As a tip, look on the site of Liz Castro: Pigs, Gourds and Wikis.