Utilisabilité

Internal and external links are different.

Rule 045

Links causing external software to be opened have an explicit libelledé.

Rule 046

The file format proposed for download is specified.

Rule 047

Navigation is done in predictable order

Rule 054

Graphic policy is consistent across the entire digital book

Renewal no. 055

Information is not supported only by color

Rule 056

The file size proposed for download is specified.

Rule 048

Content is not assigned only by its shape or screen position

Rule 059