Language for the OCR engine to use to identify the characters.
| Namespace | http://www.w3.org/2001/XMLSchema |
| enumeration | Basque |
| enumeration | Brazilian-Portuguese |
| enumeration | Bulgarian |
| enumeration | Catalan |
| enumeration | Croatian |
| enumeration | Czechoslovakian |
| enumeration | Czech |
| enumeration | Danish |
| enumeration | Dutch |
| enumeration | English(UK) |
| enumeration | English(US) |
| enumeration | Estonian |
| enumeration | Finnish |
| enumeration | French |
| enumeration | Galacian |
| enumeration | German |
| enumeration | Greek |
| enumeration | Hebrew |
| enumeration | Hungarian |
| enumeration | Italian |
| enumeration | Japanese |
| enumeration | Korean |
| enumeration | Latvian |
| enumeration | Lithuanian |
| enumeration | Macedonian |
| enumeration | Maltese |
| enumeration | Norwegian |
| enumeration | Nynorsk |
| enumeration | Occitan |
| enumeration | Polish |
| enumeration | Portuguese |
| enumeration | Romanian |
| enumeration | Russian |
| enumeration | Serbian |
| enumeration | Simplified Chinese |
| enumeration | Slovak |
| enumeration | Slovenian |
| enumeration | Spanish |
| enumeration | Swedish |
| enumeration | Swiss-German |
| enumeration | Turkish |
| enumeration | Traditional Chinese |
| enumeration | Ukrainian |