This is a type blind text. You can use it to see if all the letters are there and what they look like. Sometimes you use words like Hamburgefonts, Rafgenduks or Handgloves to test fonts. Sometimes sentences that contain all the letters of the alphabet - these sentences are called "pangrams". Very well known is this one: The quick brown fox jumps over the lazy old dog. Often, parts of sentences in foreign languages are included in type blind texts (AVAIL® and Wefox™ are testing aussi la Kerning) to test the effect in other languages.