Moving around in a book
The navigation options can be very different from one book to another. Thorium allows the following. The navigation options can be very different from one book to another. Thorium allows:
- Move forward and backward in the reading
- use table of contents, reference points and pagination (which must be included by the book’s producing organization)
- go to previous and next navigation points
- move backward and forward in the history of navigation actions
history navigation: jump back & forward to reading points (new in Thorium 2.2. EPUB only)
While reading, user has the power to navigate from one point to another using Navigation panel or following a link into the publication. This activates jump back (Ctrl + backspace) and jump forward (Ctrl + Shift + backspace) buttons on the bottom left of the reading window. Use this buttons to find a precedent place and return to the last place.
History Navigation takes into account user interactions, including clicks on bottom timeline, TOC, bookmarks, landmarks, where am I headings, go to page. It does not takes into account search previous and next and list links.
Move forward and backward
To navigate forward and backward in the content of the book you can
use the arrows on your keyboard or click on the navigation arrows
located at the bottom right of the reading interface
(
).
It is possible to move between chapters using Ctrl + Previous page (Page Up) (previous chapter) and Ctrl + Next page (Page Down) (next chapter) or Ctrl + Shift + ALT (except on MacOS) + ← (previous chapter) and Ctrl + Shift + ALT (except on MacOS) + → (next chapter).
Attention!
There are two different shortcuts to go to the next or previous chapter. Depending on your configuration and whether or not you use a screen reader, it is possible that only one of these two combinations works.
The table of contents
The table of contents represents the architecture of the book as defined by the book’s producing organization.
The first level titles are indicated without margin, those with subtitles (or second level title) are presented with a lightgray background. The sub-headings are shifted from the margin to the left and a vertical line makes it easy to know to which level of title they belong.
With NVDA
<img src="/images/local-fr/thorium-TDM-light.png" alt=“Screenshot, table of contents: Titles Level 1 Cover, Title, Copyright, Dedicae, Exergue, Introduction, The Mark of Four; Title Level 2 Deduction elevated to a science.”//>
Landmarks
Good-quality digital books have markers that allow you to identify and quickly reach the main parts of a book.
Information
Each EPUB publication should include a guide to all major landmarks. The titles of the landmarks are at the discretion of the publisher choice, but the nature of each landmark must be identified according to a semantic vocabulary. The main ones are:
- Main text (bodymatter)
- Table of contents (toc)
- bibliography
- index
- glossary
The complete list of semantic vocabulary EPUB in English is available on the W3C website.
<img src="/images/local-fr/thorium-reperes.png" alt=“Screenshot, Go to page. Current page: 3. A drop-down menu indicates 3, an editable field indicates Enter page number, a button indicates Go to.”//>
Attention !
PDF bookmarks used to compensate for the lack of a table of contents in this format are not interpreted by Thorium.
Unlike Landmarks, Bookmarks are made for users who want to place a mark into a book.
The reference pages
Digital books can have a reference pagination allowing correspondence to the pagination of the printed book.
There is a navigation option to go to the page. When you access it, this option shows the current page.
There is also a keyboard shortcut for this function. Press the
Ctrl + Shift + P,
then enter the page number in the edit box by typing it or
changing the value using the Go to page box.
<img src="/images/local-fr/thorium-gotopage.png" alt=“Screenshot, Go to page. Current page: 3. A drop-down menu indicates 3, an editable field indicates Enter page number, a button indicates Go to.”//>
Attention !
Adapted books sometimes use the reference pagination to offer a regular book breakdown to readers without reproducing the pagination of the original pagination. In this case the reference pagination cannot be used to refer to the printed book.