Cookies and preferences
Last updated: September 11, 2026
Cookies are small values stored by your browser. We use a session cookie for signing in, protecting submitted forms and remembering short-lived actions. A language cookie remembers the language used by the interface.
| Cookie | Purpose | Duration |
|---|---|---|
| PHP session cookie (normally PHPSESSID) | Login, form security and notices | Browser session; browser restoration settings may preserve sessions |
| gc_lang | Interface language | Session by default; up to one year if you choose to remember it below |
| gc_lang_memory | Your choice about remembering a language | Up to one year |
Analytics preferences
May we use Google Analytics to understand visits to our public pages? You can change your choice in cookie preferences.
Language preference
You can change your language using the language selector. Remembering it between visits is optional. Switching this off changes the language cookie to session-only; the site still works. Saving your preference stores a cookie solely to remember that choice.
Other connections
Google Fonts requests font files from Google and exposes connection information such as your IP address. If the operator has enabled Google reCAPTCHA, Google's security component may use its own cookies or similar technologies and process request/device information. The exact cookies depend on that configuration and your browser. Google explains these services in its Privacy Policy.
You can also clear or block cookies through your browser. Blocking the session cookie can prevent login and form submission. Our language-memory control does not claim to control every third-party security cookie or cookies set on other websites. New non-essential tracking must not be introduced without the information and choices required by law.