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The official domain

The address of this site ends in odersa.org. Every service the association runs sits on a subdomain of odersa.org and nowhere else. If the address in your browser's address bar does not end in odersa.org, this site is not ours.

Free, and no account

Everything is open straight away. No sign-up, no account, no password, no subscription, no advertising. Nothing is held back for those who pay, because there is nothing to pay for.

No data collected

This site does not follow you: no tracker, no tracking cookie, no measurement tool built into these pages, and nothing measured on your device. Our host counts requests in aggregate, as any server that answers does: a total, never a profile. You do not have to take our word for it: open your browser’s developer tools, go to the Network tab, and reload the page. You will see the full list of what the site asks for. Everything comes from odersa.org, nothing goes anywhere else.

Free to reuse

The content is published under the CC BY 4.0 licence. You may copy it, translate it, print it and pass it on, for your classes as much as for the people around you, on one condition only: credit ODERSA.

English
The LibraryODERSA publishing house
An ODERSA resource · Knowledge programmeA book only goes online once it is whole and read by someone else.

Write to us

An address given before you know whether it is the right door produces misdirected mail. Here are the doors, and what goes through each.

The routes that are open

  • Report a mistake in a book or on the site

    Who reads it
    The publishing team
    What goes this way
    A content mistake, a worked answer that does not come out right, a dead link, a page unreadable on a device, a wording that misleads.
    What you can expect
    A written reply. If it is a mistake, it is corrected, the book is redated, and the change is written on the What is new page. If it is not, the reply explains why.

    labibliotheque@odersa.org

  • Write to the publishing house

    Who reads it
    The publishing team
    What goes this way
    A request for a textbook on a subject, an offer to translate, a plan to use a book in a school, a licensing question that this site does not answer.
    What you can expect
    A reply, and no promise of a schedule: the association opens one title at a time, and a request weighs on the decision without making it.

    labibliotheque@odersa.org

  • Reach the association itself

    Who reads it
    ODERSA
    What goes this way
    A partnership, funding, an agreement, an invoice, a question that concerns the association rather than its publishing house alone.
    What you can expect
    A reply from the association. Outgoing mail leaves from this address; the publishing address receives and never solicits.

    contact@odersa.org

  • Disclose a security issue

    Who reads it
    The technical contact of the association
    What goes this way
    Responsible disclosure: a leak, a dangerous configuration, unexpected behaviour of the site. The address is also declared in the security file of the site, at the address the standard reserves for it.
    What you can expect
    An acknowledgement, then a fix or an explanation. Nothing will be published on your behalf, and nothing will be hidden.

    services@odersa.org

A compositor's type case seen head-on: a wooden tray divided into dozens of compartments, each packed with rows of lead type.
A compositor's type case: every character in its place, and a place for every character. A request sent to the right door arrives sooner than a well-written one.Credit

What makes a report useful

An email that gives the page, the passage and what should be there instead is handled in one reading. An email saying there is a mistake somewhere needs a full rereading, and it will wait longer, without that being a matter of goodwill.

If the problem is visual, the width of your screen and the name of your browser are enough: the association reproduces the issue from those two facts. No screenshot is needed, and no personal information is asked for.

There is no form on this site, and that is deliberate: a form implies a server that receives, therefore data in transit and data stored. An email leaves your own software, arrives in a mailbox, and the association collects nothing along the way.

The addresses on this page are the ones the site publishes everywhere else: at the foot of every page, in the settings panel, and in the security file. They are written in one single place in the repository, and every page reads from it.