Displayed texts in available languages can be customized here:
Intro - displayed at the top at the start page before logging in
Contact - displayed at the contact site, e.g. contact information for the website maintainer
Legal notice - displayed at the legal notice site, e.g. information about the institute
Citation example - displayed under the form at insert/update of an edition or a bibliography
Links to Contact and Legal notice are available at the cogwheel icon in the top right corner if they contain text.