Version 18 has not changed from Version 17.5. For more information, refer to http://www.leadtools.com/corporate/new-in-v18.htm.
The following members have been added to existing types in v17:
| Member | Description | 
|---|---|
| Leadtools.Workflow.Ocr.OcrEngineType.Arabic | 
                 Specifies the LEADTOOLS OCR Arabic engine. Internally, the OCR library inside Leadtools.Forms.Ocr.Arabic.dll is used.  | 
        
The following members have been added to existing types in v17:
| Member | Description | 
|---|---|
| OcrDocumentFormat.Docx (2007/2010) | 
                 Microsoft Word 2007/2010 Format (DOCX)  | 
        
| OcrDocumentFormat.Xls | 
                 Microsoft Word 2003 Format (XLS)  | 
        
| OcrDocumentFormat.Pdf12 | 
                 Adobe Portable Document Format (PDF) version 1.2 text only.  | 
        
| OcrDocumentFormat.Pdf12ImageOverText | 
                 Adobe Portable Document Format (PDF) version 1.2 with image over text.  | 
        
| OcrDocumentFormat.Pdf13 | 
                 Adobe Portable Document Format (PDF) version 1.3 text only.  | 
        
| OcrDocumentFormat.Pdf13ImageOverText | 
                 Adobe Portable Document Format (PDF) version 1.3 with image over text.  | 
        
| OcrDocumentFormat.Pdf15 | 
                 Adobe Portable Document Format (PDF) version 1.5 text only.  | 
        
| OcrDocumentFormat.Pdf15ImageOverText | 
                 Adobe Portable Document Format (PDF) version 1.5 with image over text.  | 
        
The following assembly has been added to LEADTOOLS For .NET v16.5:
| Namespace | Description | 
|---|---|
| Leadtools.Workflow.Ocr | Includes classes, structures and enumerations for extending LEADTOOLS SDK allowing developers to easily create Windows Workflow applications that are OCR capable. |