OCR Functions:
Zones
L_DocAddZone
L_DocEnableParallelRecognition
L_DocExportZones
L_DocFindZones
L_DocGetZoneCount
L_DocGetZone
L_DocGetZoneOptions
L_DocImportZones
L_DocIsParallelRecognitionEnabled
L_DocRemoveZone
L_DocSetZoneOptions
L_DocUpdateZone