- Info
    Accessibility
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    This site has been designed to be completely accessible and usable, working in
    accordance with the Web Content Accessibility Guidelines (WCAG).
    If there is anything on this site — accessibility or validation related —
    that is not according to the standard, please contact the  Site Administration.
    
    
    Access keys
    
    Access keys are a navigation device enabling you to get around this web
    site using your keyboard.
    
    Available access keys
    This site uses a setup that closely matches most international
    recommendations on access keys. These are: 
    
    
        - 1— Home Page
- 4— Search field focus
- 5— Advanced Search
- 9— Contact information
- 0— Access Key details
Using access keys in common web browsers
         
    
        - Google Chrome
- 
        On Windows, FreeBSD and Linux, hold down the Altkey and press
        the number or letter of the access key (holdingAlt+Shiftkeys may be required in some situations), release both keys.
 On Mac, hold down theCtrl+Optkeys and press
        the number or letter of the access key, release both keys.
- Internet Explorer
- 
        Hold down the Altkey, press the number or letter of
        the access key, release both keys.
- Microsoft Edge
- 
        Hold down the Altkey, press the number or letter of
        the access key, release both keys.
- Mozilla Firefox
- 
        On Windows, FreeBSD and Linux, hold down the Alt+Shiftkeys and press the number or letter of the access key, release both keys.
 On Mac, hold down theCtrlkey or theCtrl+Optkeys and press the number or letter of the access key, release both keys.
- Opera
- 
        On Windows, FreeBSD and Linux, hold down the Altkey and press the number or
        letter of the access key (holdingAlt+Shiftkeys may be required in some situations), release both keys.
 On Mac, hold down theCtrl+Optkeys and press the number or letter of the access key, release both keys.
- Safari
- 
        On Windows, hold down the Altkey and press the number or
        letter of the access key, release both keys.
 On Mac, hold down theCtrl+Optkeys and press the number or letter of the access key, release both keys.
Accessibility Statement
    
    We have undertaken to use our knowledge and understanding of the ways in which 
    different people access the Internet, to develop a web site that is clear and 
    simple for everybody to use.