To make this site work properly, we sometimes place small data files called cookies on your device. Most big websites do this too.
A cookie is a small text file that a website saves on your computer or mobile device when you visit the site. It enables the website to remember your actions and preferences (such as login, language, font size and other display preferences) over a period of time, so you don’t have to keep re-entering them whenever you come back to the site or browse from one page to another.
A number of our pages use cookies to:
The cookie-related information is not used to identify you personally and the pattern data is fully under our control. These cookies are not used for any purpose other than that described here.
You can control and/or delete cookies as you wish - for details, see aboutcookies.org. You can delete all the cookies that are already on your computer and you can set most browsers to prevent them from being placed. If you do this, however, you may have to manually adjust some preferences every time you visit a site and some services and functionalities may not work.