Defines Recognition licensed features. The feature should be checked with IG_REC_is_feature_licensed_get before using.
Values:
| IG_REC_FEATURE_NONE | No licensed features are available. |
| IG_REC_FEATURE_OCR | Main OCR is licensed. |
| IG_REC_FEATURE_ASIAN | Asian support is licensed. |
| IG_REC_FEATURE_FORMATTED_OUTPUT | Formatted output is licensed. |