What do the language abilities mean?
Level 0 – No knowledge. Level 1 – Some forgotten knowledge from school or university. Level 2 – Understands written text with help of dictionary. Level 3 – Understands written text with some help of dictionary, can write a little or speak on the phone a little. Level 4 – Understands written text, can write and speak on the phone (almost no communication barrier). Level 5 – Fluent language ability.