A 'cookie' is a small file of letters and numbers that allow a website to recognise a visitor's pc, mobile or other device.
ensuring the user does not have to give the same information several times during one task
recognising that the user has given a user name and password so that this is not necessary for every web page requested
measuring how many people are using services, and which pages they are visiting so that the site can be made easier to use and has enough capacity
Cookies aren’t used to identify individual visitors, but rather to make the site work better for you. The cookies used on this site are listed below, with descriptions and expiry dates. You can manage cookies and delete them if you wish – but doing so may adversely affect the experience you have on the site.
To learn more about cookies and how to manage them, visit AboutCookies.org.
Across this website we can make use of Flash files. These files present information, allow integration with third parties (such as YouTube) and can offer a richer online experience. Flash files can however store cookie-like data on your computer, known as "Local Shared Objects".
We have strived to identify any Flash elements that are likely to set cookies but, at this point in time, we cannot guarantee the status of every Flash file. Adobe offers a tool to monitor, prevent and remove "Flash cookies" — Global Storage Settings panel.