The following types have been added in v18:
| Type | Description | 
|---|---|
| Leadtools.Forms.Processing.TableColumn | A column of Leadtools.Forms.Processing.TableFormField. | 
| Leadtools.Forms.Processing.TableFormField | A single rectangular region on a form that is automatically extended to define a table/invoice area on a blank (not filled-in) form, so the text reading process can be performed on the filled form during the form processing on the recognized fields. | 
| Leadtools.Forms.Processing.TableFormFieldResult | Provides the results of processing the table field. | 
| Leadtools.Forms.Processing.TableFormRow | The row containing the recognized fields in the table. | 
The following enumerations have been added in v18:
| Type | Description | 
|---|---|
| Leadtools.Forms.Processing.DropoutFlag | Values that represent the Dropout options for a form field. | 
| Leadtools.Forms.Processing.FieldAlignment | Values that represent the alignment of columns/fields in a table. | 
The following members have been added in v18:
| Type | Description | 
|---|---|
| Leadtools.Forms.Processing.FormField.Dropout | Gets or sets the dropout options. | 
For more information, refer to http://www.leadtools.com/corporate/new-in-v18.htm.
The following Types have been added in v17.5:
| Type | Description | 
|---|---|
| Leadtools.Forms.Processing.BarcodeFormField.Symbology | 
                 Gets or sets the barcode symbology associated with this field.  | 
        
| Leadtools.Forms.Processing.BarcodeFieldData(Leadtools.Barcode.BarcodeSymbology,System.Byte[]) | Initializes a new BarcodeFieldData class object. | 
| Leadtools.Forms.Processing.BarcodeFieldData.Symbology | Gets or sets the barcode symbology. | 
The following Types have been removed from v17.5:
| Type | Description | 
|---|---|
| Leadtools.Forms.Processing.BarcodeFormField.AdvancedSearchCodes | 
                 Replaced by Leadtools.Forms.Processing.BarcodeFormField.Symbology in LEADTOOLS v 17.5  | 
        
| Leadtools.Forms.Processing.BarcodeFormField.ReadOptions | Replaced by Leadtools.Forms.Processing.BarcodeFormField.Symbology in LEADTOOLS v 17.5 | 
| Leadtools.Forms.Processing.BarcodeFormField.Direction | Replaced by Leadtools.Forms.Processing.BarcodeFormField.Symbology in LEADTOOLS v 17.5 | 
| Leadtools.Forms.Processing.BarcodeFormField.SearchCodes | Replaced by Leadtools.Forms.Processing.BarcodeFormField.Symbology in LEADTOOLS v 17.5 | 
| Leadtools.Forms.Processing.BarcodeFormField.StandardSearchCodes | Replaced by Leadtools.Forms.Processing.BarcodeFormField.Symbology in LEADTOOLS v 17.5 | 
| Leadtools.Forms.Processing.BarcodeFieldData.#ctor(Leadtools.Barcode.BarcodeSearchTypeFlags,System.Byte[]) | Replaced by Leadtools.Forms.Processing.BarcodeFieldData(Leadtools.Barcode.BarcodeSymbology,System.Byte[]) in LEADTOOLS V 17.5 | 
| Leadtools.Forms.Processing.BarcodeFieldData.SearchCodes | Replaced by Leadtools.Forms.Processing.BarcodeFieldData.Symbology in LEADTOOLS v 17.5 | 
| Leadtools.Forms.Processing.BarcodeSearchCodes | Replaced by Leadtools.Forms.Processing.BarcodeFieldData.Symbology in LEADTOOLS v 17.5 | 
| Leadtools.Forms.Processing.BarcodeAdvanced1DSearchCodes | Replaced by Leadtools.Forms.Processing.BarcodeFieldData.Symbology in LEADTOOLS v 17.5 | 
The following members have been added to existing types in v17:
| Member | Description | 
|---|---|
| FormField.Tag | 
                 Gets or sets user-defined data of the field.  | 
        
| TextFormFieldResult.Matches | 
                 Contains all occurrences of the successful matches in the results text Leadtools.Forms.Processing.OcrFormFieldResult.Text for the Leadtools.Forms.Processing.TextFormField.RegexPattern.  | 
        
| OmrFormField.FrameMethod | 
                 Gets or sets the OMR frame detection mode of the field.  | 
        
| OmrFormField.Sensitivity | 
                 Gets or sets the OMR sensitivity mode of the field.  | 
        
| OmrFormField.UseFieldSettings | 
                 Gets or sets the use of the field settings for its OMR recognition.  | 
        
The following members have been added to existing types in v16.5:
| Member | Description | 
|---|---|
| Leadtools.Forms.Processing.FormProcessingEngine.ProcessPage | 
                 Performs field processing on the provided page image.  | 
        
Version 16 has not changed from Version 15.