List of language skills
- Arabic 1
- Bulgarian 1
- Chinese 5
- Croatian 11
- Czech 95
- Dutch 13
- English 5 897
- Esperanto 1
- Estonian 1
- Finnish 1
- French 60
- German 1 145
- Greek 3
- Hungarian 301
- Italian 63
- Japanese 1
- Macedonian 5
- Norwegian 4
- Polish 40
- Portuguese 2
- Romanian 4
- Russian 63
- Serbian 15
- Slovak 2 623
- Slovenian 6
- Spanish 27
- Turkish 5
- Ukrainian 44