--- ocradlib.cc	2014-09-11 16:25:24.000000000 -0400
+++ ocradlib.cc	2015-01-13 06:00:02.000000000 -0500
@@ -173,6 +173,38 @@
   return retval;
   }
 
+int OCRAD_transform( OCRAD_Descriptor * const ocrdes, const char * const transformation )
+  {
+  if( !verify_descriptor( ocrdes ) ) return -1;
+  Transformation trans;
+  if( !trans.set( transformation ) ) { return -1; }
+  ocrdes->page_image->transform( trans );
+  return 0;
+  }
+
+int OCRAD_set_exportfile( OCRAD_Descriptor * const ocrdes, const char * const filename)
+  {
+  if( !verify_descriptor( ocrdes ) ) return -1;
+  
+  FILE * exportfile = 0;
+  if( filename && filename[0] )
+    {
+    if( std::strcmp( filename, "-" ) == 0 ) exportfile = stdout;
+    else exportfile = std::fopen( filename, "w" );
+    }
+  if( !exportfile ) { ocrdes->ocr_errno = OCRAD_bad_argument; return -1; }
+
+  ocrdes->control.exportfile = exportfile;
+  return 0;
+  }
+
+int OCRAD_add_filter( OCRAD_Descriptor * const ocrdes, const char * const name)
+  {
+  if( !verify_descriptor( ocrdes ) ) return -1;
+  ocrdes->control.add_filter("", name);
+  return 0;
+  }
+
 
 int OCRAD_recognize( OCRAD_Descriptor * const ocrdes, const bool layout )
   {
@@ -184,6 +216,7 @@
     { ocrdes->ocr_errno = OCRAD_mem_error; return -1; }
   if( ocrdes->textpage ) delete ocrdes->textpage;
   ocrdes->textpage = textpage;
+  if( ocrdes->control.exportfile ) textpage->xprint( ocrdes->control );
   return 0;
   }
 
--- ocradlib.h	2014-10-02 12:42:41.000000000 -0400
+++ ocradlib.h	2015-01-12 23:59:26.000000000 -0500
@@ -68,11 +68,20 @@
 int OCRAD_set_utf8_format( struct OCRAD_Descriptor * const ocrdes,
                            const bool utf8 );		// 0 = byte, 1 = utf8
 
+int OCRAD_set_exportfile( struct OCRAD_Descriptor * const ocrdes,
+                               const char * const filename);
+
+int OCRAD_add_filter( struct OCRAD_Descriptor * const ocrdes,
+                               const char * const name);
+
 int OCRAD_set_threshold( struct OCRAD_Descriptor * const ocrdes,
                          const int threshold );		// 0..255, -1 = auto
 
 int OCRAD_scale( struct OCRAD_Descriptor * const ocrdes, const int value );
 
+int OCRAD_transform( OCRAD_Descriptor * const ocrdes, 
+                        const char * const transformation );
+
 int OCRAD_recognize( struct OCRAD_Descriptor * const ocrdes,
                      const bool layout );