Usability

Ease with which a user can interact with the book to achieve their objectives satisfactorily. This includes the explicitness of navigation and content description information (languages, data, audience, etc.).

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usability

The source code of each part or portion of the book contains a metadata that describes the content of the book

Rule 003

The dates are presented in explicit formats.

Rule 004

The publication date of the required content is specified

Rule 006

A vocabulary or glossary adapted to the audience explains the sectoral or technical vocabulary.

Rule 007

The book has a metadata that exposes the nature of the content

Rule 010

The title of each Content Document identifies its content.

Rule 015

Each decorative image is tagged as such

022

Each link image has a text alternative describing the link function

Rule 023

The international code is available for all phone numbers

Rule 034

Country is accurate for all mailing addresses

Rule 035

The source code of each portion indicates the main language of the content

036

The main language of the target page of a link is identifiable when it differs from that of the original page

Renewal no. 037

The label for each link describes its function or the nature of the content it points to.

Rule 040

The underscore is reserved for the links.

Rule 042

Links are visually different from the rest of the content.

Rule 043

The digital book does not apply the same style to links visited and not visited.

Rule 044

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

Naming the proposed files for download identifies the content and origin of the files

Rule 050

All internal links to the digital book are valid

Rule 051

The digital book is also readable by keyboard or through support technology

Rule 053

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

Contents are present with sufficient contrast compared to their background

Rule 057

The size of the clickable elements is sufficient.

Rule 061

Texts that can be formatted via styles are not replaced by images.

Rule 062

Downloading file language is specified when it differs from the original page language

Rule 049

The file size proposed for download is specified.

Rule 048

Every language change is reported.

Rule 038

Each link is assigned a title in the source code.

Renewal no. 039

Scientific formulas are provided in the appropriate markup language (MathML, ChemML, etc.)

Rule 081

Content is not assigned only by its shape or screen position

Rule 059

The content and meaning of each page are not altered when the styles are disabled

058

Of the available information about the book, the sense or sense to mobilize to view the content integrity is or are indicated

Rule 083

Of the available information about the book, title, author or author, publishing house, cover, language and source are indicated

Rule 085

Source book pagination is reproduced appropriately

Rule 082

Each graph is accompanied by its numerical data

Rule 009