Every reference title can be attributed to an unlimited
number of keywords. Use the
button to enter a new keyword and the
button to delete a selected keyword.
You can specify the language of your keyword, the type of your keyword and an URI.
Either choose a keyword from the keywords that are already existing in the database
by typing the initial characters and using the the drop down button of
the field or type a new keyword.
To view and/or change the URI click on the 
button. A simple browser will open as shown below.
Click on the 
botton if you want to return to the homepage of this browser (www.google.com). Click
on the OK button to take the current URI in your database record and close
the window.