Similar links have identical colors, forms and behaviors in all documents
Keeping a relationship between the form of a link and its nature makes it easier to learn the internal interface to the ebook.
Objectives
Improve the identification of the links and their respective functions.
Implementation
Apply common styling, colour, grease, case and underscore properties to the same nature set of links.
Control
Throughout the ebook, check that links of the same nature (links along the text, references to notes, social networks, etc. have visually similar representations throughout the ebook.