The graphic charter is consistent throughout the digital book.

The graphic charter must make it possible to translate the structure of the work: the reader must be able to find their way in the progression of the plot, the hierarchy of information, etc.

Objectives

• Allow homogeneity and continuity in reading and navigation.

Implementation

• Use one or more style sheets that allow for a coherent layout of the text and/or different content.
• Ensure that the fonts included in the digital book are readable by all audiences.

Control

• The control takes place when checking the display of pages in different environments (i.e. reading software, e-readers).

Validation

• Needs to be human verified.