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