Help – technical information

System requirements

These pages are programmed in accordance with the W3C (World Wide Web Consortium) guidelines and are barrier free. For full representation of the pages an up-to-date browser with CSS support is required (at least Internet Explorer 9.0, Mozilla Firefox 11.0, Opera 12.02, MAC Safari 6).

Enlarging the lettering

To enlarge the lettering, please use the functions of your browser:

Internet Explorer:

  • menu view > font size or zoom > size of your choice


  • menu view > font size > size of your choice
  • Using the keyboard: shortcut key CTRL and + or CTRL and - (Windows); Apple and + or Apple and - (MacOS)

Mozilla / Netscape:

  • menu show > text zoom > percentage of your choice
  • Using the keyboard: STRG and + or STRG and - (Windows); Apple and + or Apple and - (MacOS)


  • menu view > zoom factor > percentage of your choice

MAC Safari:

  • menu view > make text bigger/smaller
  • Using the keyboard: Apple and + or Apple and -

PDF-Files (portable document format)

Some of the information and other material is offered in the platform-independent PDF format in order to facilitate transfer and display the documents in a form that closely resembles the original.

In order to view such documents you require a PDF Reader. You can download this software from the internet free of charge.

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