Cookies are small files a website stores in your browser; local storage is a similar store that never leaves your device. This page lists every one this site uses and when.
Your choice
On your first visit a banner offers three categories:
- Necessary — always on. What the site needs to work and to remember the choices you make on it.
- Analytics — Google Analytics 4 and Yandex Metrica, to understand how the site is used.
- Marketing — the Meta Pixel, to measure and tailor our advertising.
Nothing in the Analytics or Marketing category is loaded until you allow it. Your choice is kept for 12 months, then we ask again. To change it at any time, use “Cookies” in the footer of any page: the banner reopens with your current settings. Withdrawing consent switches Google Analytics to “denied” and reloads the page without Yandex Metrica and the Meta Pixel. You can also delete cookies in your browser's settings.
Necessary
| Name | Set by | Purpose | Lifetime | Category |
|---|---|---|---|---|
cg-cookie-consent | ROCS Global | Remembers your cookie choice (local storage) | 12 months | Necessary |
cg-lang | ROCS Global | Remembers the language you picked (cookie and local storage) | 1 year | Necessary |
cg-agent | ROCS Global | Set only when you follow an agent's link: shows that agent's contact details across the site and attributes your PDF requests to them. Not used for advertising. | 90 days | Necessary (functional) |
__cf_bm | Cloudflare | Tells people from bots, to protect the site; Cloudflare may set it | 30 minutes (Cloudflare's default) | Necessary |
Interface preferences
These stay in your browser's local storage and are never sent to us. They only remember how you left the page.
| Name | Set by | Purpose | Lifetime | Category |
|---|---|---|---|---|
cg-lang-banner | ROCS Global | Remembers that you closed the “also in your language” suggestion | Until you clear it | Necessary |
cg:hot-offers-last-visit | ROCS Global | When you last saw the home page, so the new-offers window does not interrupt every visit | Until you clear it | Necessary |
cg:offer-promos-rail-y | ROCS Global | Where you dragged the offers rail on the screen | Until you clear it | Necessary |
cg:catalog-book-scale | ROCS Global | The page size you chose in the catalogue viewer | Until you clear it | Necessary |
Analytics
Set only after you allow Analytics, and only for the services switched on for the site. Lifetimes are the providers' defaults. Yandex Metrica's session recording (Webvisor) is off, so its recording cookies are not used.
| Name | Set by | Purpose | Lifetime | Category |
|---|---|---|---|---|
_ga | Distinguishes visitors for Google Analytics | 2 years (provider default) | Analytics | |
_ga_<container-id> | Keeps the state of your current session | 2 years (provider default) | Analytics | |
_ym_uid | Yandex | Distinguishes visitors for Yandex Metrica | 1 year (provider default) | Analytics |
_ym_d | Yandex | The date of your first visit | 1 year (provider default) | Analytics |
_ym_isad | Yandex | Whether your browser blocks ads | 2 days (provider default) | Analytics |
_ym_* | Yandex | Other session and technical state of Yandex Metrica | Up to 1 year (provider default) | Analytics |
Marketing
Set only after you allow Marketing. Lifetimes are the provider's defaults.
| Name | Set by | Purpose | Lifetime | Category |
|---|---|---|---|---|
_fbp | Meta | Distinguishes browsers, to measure and deliver Meta advertising | 90 days (provider default) | Marketing |
_fbc | Meta | Remembers the ad you clicked, when you arrive from one | 90 days (provider default) | Marketing |
Embedded content
Maps (OpenStreetMap, Esri) and videos in articles (YouTube in privacy-enhanced mode, Vimeo) load from their providers, which may store their own cookies or similar data under their own policies — for videos, typically once you press play.
More on how we handle personal data: privacy policy.