With it you can see if any letters are there, and how they look. Sometimes one uses words like Hamburgefonts, Rafgenduks or Handgloves to test fonts.
Sometimes records that contain all letters of the alphabet - you call this sets »Pangrams«. Very well known is this: The quick brown fox jumps over the lazy old dog.
Often foreign-language phrases are installed in Typoblindtexts (AVAIL® and Wefox ™ are testing aussi la kerning) to test the effect in other languages??. In Lateinisch sieht zum Beispiel fast jede Schrift gut aus.
