diff --git a/PdfForQtLib/sources/pdfdocumentbuilder.cpp b/PdfForQtLib/sources/pdfdocumentbuilder.cpp
index a08b654..c0106ba 100644
--- a/PdfForQtLib/sources/pdfdocumentbuilder.cpp
+++ b/PdfForQtLib/sources/pdfdocumentbuilder.cpp
@@ -757,6 +757,47 @@ void PDFDocumentBuilder::setObject(PDFObjectReference reference, PDFObject objec
     m_storage.setObject(reference, qMove(object));
 }
 
+void PDFDocumentBuilder::createDocumentParts(const std::vector<size_t>& parts)
+{
+    PDFObjectReference root = createDocumentPartRoot();
+    std::vector<PDFObjectReference> pages = getPages();
+
+    PDFObjectFactory objectFactory;
+    objectFactory.beginDictionary();
+    objectFactory.beginDictionaryItem("DParts");
+    objectFactory.beginArray();
+
+    size_t start = 0;
+    for (std::size_t count : parts)
+    {
+        if (count == 0)
+        {
+            continue;
+        }
+
+        auto itStart = std::next(pages.cbegin(), start);
+        auto itEnd = std::next(itStart, count);
+
+        PDFObjectReference item = createDocumentPartItem(*itStart, *std::prev(itEnd), root);
+        for (auto it = itStart; it != itEnd; ++it)
+        {
+            setPageDocumentPart(*it, item);
+        }
+
+        objectFactory.beginArray();
+        objectFactory << item;
+        objectFactory.endArray();
+
+        start += count;
+    }
+
+    objectFactory.endArray();
+    objectFactory.endDictionaryItem();
+    objectFactory.endDictionary();
+
+    mergeTo(root, objectFactory.takeObject());
+}
+
 void PDFDocumentBuilder::appendTo(PDFObjectReference reference, PDFObject object)
 {
     m_storage.setObject(reference, PDFObjectManipulator::merge(m_storage.getObject(reference), qMove(object), PDFObjectManipulator::ConcatenateArrays));
@@ -2850,6 +2891,68 @@ PDFObjectReference PDFDocumentBuilder::createCatalogPageTreeRoot()
 }
 
 
+PDFObjectReference PDFDocumentBuilder::createDocumentPartItem(PDFObjectReference startPage,
+                                                              PDFObjectReference endPage,
+                                                              PDFObjectReference parent)
+{
+    PDFObjectFactory objectBuilder;
+
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("Type");
+    objectBuilder << WrapName("DPart");
+    objectBuilder.endDictionaryItem();
+    objectBuilder.beginDictionaryItem("Parent");
+    objectBuilder << parent;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.beginDictionaryItem("Start");
+    objectBuilder << startPage;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.beginDictionaryItem("End");
+    objectBuilder << endPage;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObjectReference documentPart = addObject(objectBuilder.takeObject());
+    return documentPart;
+}
+
+
+PDFObjectReference PDFDocumentBuilder::createDocumentPartRoot()
+{
+    PDFObjectFactory objectBuilder;
+
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("Type");
+    objectBuilder << WrapName("DPart");
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObjectReference rootNodeReference = addObject(objectBuilder.takeObject());
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("Type");
+    objectBuilder << WrapName("DPartRoot");
+    objectBuilder.endDictionaryItem();
+    objectBuilder.beginDictionaryItem("DPartRootNode");
+    objectBuilder << rootNodeReference;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObjectReference documentPartReference = addObject(objectBuilder.takeObject());
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("Parent");
+    objectBuilder << documentPartReference;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObject updatedRootNode = objectBuilder.takeObject();
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("DPartRoot");
+    objectBuilder << documentPartReference;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObject updatedCatalog = objectBuilder.takeObject();
+    mergeTo(rootNodeReference, updatedRootNode);
+    mergeTo(getCatalogReference(), updatedCatalog);
+    return rootNodeReference;
+}
+
+
 PDFObject PDFDocumentBuilder::createTrailerDictionary(PDFObjectReference catalog)
 {
     PDFObjectFactory objectBuilder;
@@ -3123,6 +3226,34 @@ void PDFDocumentBuilder::setAnnotationTitle(PDFObjectReference annotation,
 }
 
 
+void PDFDocumentBuilder::setCatalogAcroForm(PDFObjectReference acroForm)
+{
+    PDFObjectFactory objectBuilder;
+
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("AcroForm");
+    objectBuilder << acroForm;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObject updatedCatalog = objectBuilder.takeObject();
+    mergeTo(getCatalogReference(), updatedCatalog);
+}
+
+
+void PDFDocumentBuilder::setCatalogOptionalContentProperties(PDFObjectReference ocProperties)
+{
+    PDFObjectFactory objectBuilder;
+
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("OCProperties");
+    objectBuilder << ocProperties;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObject updatedCatalog = objectBuilder.takeObject();
+    mergeTo(getCatalogReference(), updatedCatalog);
+}
+
+
 void PDFDocumentBuilder::setDocumentAuthor(QString author)
 {
     PDFObjectFactory objectBuilder;
@@ -3288,6 +3419,21 @@ void PDFDocumentBuilder::setLanguage(QString language)
 }
 
 
+void PDFDocumentBuilder::setPageDocumentPart(PDFObjectReference page,
+                                             PDFObjectReference documentPart)
+{
+    PDFObjectFactory objectBuilder;
+
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("DPart");
+    objectBuilder << documentPart;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObject updatedPage = objectBuilder.takeObject();
+    mergeTo(page, updatedPage);
+}
+
+
 void PDFDocumentBuilder::updateTrailerDictionary(PDFInteger objectCount)
 {
     PDFObjectFactory objectBuilder;
@@ -3312,20 +3458,6 @@ void PDFDocumentBuilder::updateTrailerDictionary(PDFInteger objectCount)
 }
 
 
-void PDFDocumentBuilder::setCatalogOptionalContentProperties(PDFObjectReference ocProperties)
-{
-    PDFObjectFactory objectBuilder;
-
-    objectBuilder.beginDictionary();
-    objectBuilder.beginDictionaryItem("OCProperties");
-    objectBuilder << ocProperties;
-    objectBuilder.endDictionaryItem();
-    objectBuilder.endDictionary();
-    PDFObject updatedCatalog = objectBuilder.takeObject();
-    mergeTo(getCatalogReference(), updatedCatalog);
-}
-
-
 /* END GENERATED CODE */
 
 }   // namespace pdf
diff --git a/PdfForQtLib/sources/pdfdocumentbuilder.h b/PdfForQtLib/sources/pdfdocumentbuilder.h
index 62759c2..599dcdb 100644
--- a/PdfForQtLib/sources/pdfdocumentbuilder.h
+++ b/PdfForQtLib/sources/pdfdocumentbuilder.h
@@ -348,6 +348,12 @@ public:
     /// \param object Object to be set
     void setObject(PDFObjectReference reference, PDFObject object);
 
+    /// Creates document parts from given pages. Pages must be flattened
+    /// by function \p flattenPageTree. \sa flattenPageTree. Each document
+    /// part has certain page size, sum of \p parts must equal to page count.
+    /// \param parts Parts (page count of each document part)
+    void createDocumentParts(const std::vector<size_t>& parts);
+
 /* START GENERATED CODE */
 
     /// Appends a new page after last page.
@@ -863,6 +869,19 @@ public:
     PDFObjectReference createCatalogPageTreeRoot();
 
 
+    /// Creates document part item (for certain range of pages).
+    /// \param startPage First page of page range.
+    /// \param endPage Last page of page range.
+    /// \param parent Parent node (must be a reference to parent node).
+    PDFObjectReference createDocumentPartItem(PDFObjectReference startPage,
+                                              PDFObjectReference endPage,
+                                              PDFObjectReference parent);
+
+
+    /// Creates document part root node (and setups catalog object).
+    PDFObjectReference createDocumentPartRoot();
+
+
     /// This function is used to create a new trailer dictionary, when blank document is created. Do not 
     /// call this function manually.
     /// \param catalog Reference to document catalog
@@ -970,6 +989,16 @@ public:
                             QString title);
 
 
+    /// Set AcroForm to catalog.
+    /// \param acroForm Reference to AcroForm object.
+    void setCatalogAcroForm(PDFObjectReference acroForm);
+
+
+    /// Set optional content properties to catalog.
+    /// \param ocProperties Reference to catalog optional content properties.
+    void setCatalogOptionalContentProperties(PDFObjectReference ocProperties);
+
+
     /// Set document author.
     /// \param author Author
     void setDocumentAuthor(QString author);
@@ -1040,17 +1069,19 @@ public:
     void setLanguage(QString language);
 
 
+    /// Sets document part to page.
+    /// \param page Page
+    /// \param documentPart Document part
+    void setPageDocumentPart(PDFObjectReference page,
+                             PDFObjectReference documentPart);
+
+
     /// This function is used to update trailer dictionary. Must be called each time the final document is 
     /// being built.
     /// \param objectCount Number of objects (including empty ones)
     void updateTrailerDictionary(PDFInteger objectCount);
 
 
-    /// Set optional content properties to catalog.
-    /// \param ocProperties Reference to catalog optional content properties.
-    void setCatalogOptionalContentProperties(PDFObjectReference ocProperties);
-
-
 /* END GENERATED CODE */
 
 private:
diff --git a/PdfTool/pdftoolunite.cpp b/PdfTool/pdftoolunite.cpp
index 4b80f0a..edaa964 100644
--- a/PdfTool/pdftoolunite.cpp
+++ b/PdfTool/pdftoolunite.cpp
@@ -70,7 +70,10 @@ int PDFToolUnite::execute(const PDFToolOptions& options)
         pdf::PDFDocumentBuilder documentBuilder;
         documentBuilder.createDocument();
 
+        std::vector<size_t> documentPartPageCounts;
+
         pdf::PDFObjectReference ocPropertiesMerged = documentBuilder.addObject(pdf::PDFObject());
+        pdf::PDFObjectReference formMerged = documentBuilder.addObject(pdf::PDFObject());
 
         std::vector<pdf::PDFObjectReference> pages;
         for (const QString& fileName : files)
@@ -154,7 +157,10 @@ int PDFToolUnite::execute(const PDFToolOptions& options)
             acroFormReference = references.back();
             references.pop_back();
 
+            documentPartPageCounts.push_back(references.size());
+
             documentBuilder.appendTo(ocPropertiesMerged, documentBuilder.getObjectByReference(ocPropertiesReference));
+            documentBuilder.appendTo(formMerged, documentBuilder.getObjectByReference(acroFormReference));
             pages.insert(pages.end(), references.cbegin(), references.cend());
         }
 
@@ -164,6 +170,14 @@ int PDFToolUnite::execute(const PDFToolOptions& options)
             documentBuilder.setCatalogOptionalContentProperties(ocPropertiesMerged);
         }
 
+        if (!documentBuilder.getObjectByReference(formMerged).isNull())
+        {
+            documentBuilder.setCatalogAcroForm(formMerged);
+        }
+
+        // Correct page tree (invalid parents are present)
+        documentBuilder.flattenPageTree();
+        documentBuilder.createDocumentParts(documentPartPageCounts);
         pdf::PDFDocument mergedDocument = documentBuilder.build();
 
         // Optimize document - remove unused objects and shrink object storage
@@ -182,6 +196,11 @@ int PDFToolUnite::execute(const PDFToolOptions& options)
             {
                 finalBuilder.setObject(ocPropertiesReference, pdf::PDFObjectManipulator::removeDuplicitReferencesInArrays(finalBuilder.getObjectByReference(ocPropertiesReference)));
             }
+            pdf::PDFObjectReference acroFormReference = loader.readReferenceFromDictionary(dictionary, "AcroForm");
+            if (acroFormReference.isValid())
+            {
+                finalBuilder.setObject(acroFormReference, pdf::PDFObjectManipulator::removeDuplicitReferencesInArrays(finalBuilder.getObjectByReference(acroFormReference)));
+            }
         }
         mergedDocument = finalBuilder.build();
 
diff --git a/generated_code_definition.xml b/generated_code_definition.xml
index 22dcd27..c4fa34e 100644
--- a/generated_code_definition.xml
+++ b/generated_code_definition.xml
@@ -5654,6 +5654,220 @@ return annotationObject;</property>
       <property name="functionDescription">Creates page tree root for the catalog. This function is only called when new document is being created. Do not call this function manually.</property>
       <property name="returnType">_PDFObjectReference</property>
     </QObject>
+    <QObject class="codegen::GeneratedFunction">
+      <property name="objectName"></property>
+      <property name="items">
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">startPage</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">First page of page range.</property>
+            </QObject>
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">endPage</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Last page of page range.</property>
+            </QObject>
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">parent</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Parent node (must be a reference to parent node).</property>
+            </QObject>
+          </property>
+          <property name="actionType">Parameters</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Type</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">WrapName("DPart")</property>
+                </QObject>
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Parent</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">parent</property>
+                </QObject>
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Start</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">startPage</property>
+                </QObject>
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">End</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">endPage</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">documentPart</property>
+          <property name="variableType">_PDFObjectReference</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items"/>
+          <property name="actionType">Code</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code">return documentPart;</property>
+        </QObject>
+      </property>
+      <property name="functionType">Structure</property>
+      <property name="functionName">createDocumentPartItem</property>
+      <property name="functionDescription">Creates document part item (for certain range of pages).</property>
+      <property name="returnType">_PDFObjectReference</property>
+    </QObject>
+    <QObject class="codegen::GeneratedFunction">
+      <property name="objectName"></property>
+      <property name="items">
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Type</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">WrapName("DPart")</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">rootNodeReference</property>
+          <property name="variableType">_PDFObjectReference</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Type</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">WrapName("DPartRoot")</property>
+                </QObject>
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">DPartRootNode</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">rootNodeReference</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">documentPartReference</property>
+          <property name="variableType">_PDFObjectReference</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Parent</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">documentPartReference</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">updatedRootNode</property>
+          <property name="variableType">_PDFObject</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">DPartRoot</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">documentPartReference</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">updatedCatalog</property>
+          <property name="variableType">_PDFObject</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items"/>
+          <property name="actionType">Code</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code">mergeTo(rootNodeReference, updatedRootNode);
+mergeTo(getCatalogReference(), updatedCatalog);
+return rootNodeReference;</property>
+        </QObject>
+      </property>
+      <property name="functionType">Structure</property>
+      <property name="functionName">createDocumentPartRoot</property>
+      <property name="functionDescription">Creates document part root node (and setups catalog object).</property>
+      <property name="returnType">_PDFObjectReference</property>
+    </QObject>
     <QObject class="codegen::GeneratedFunction">
       <property name="objectName"></property>
       <property name="items">
@@ -6697,6 +6911,120 @@ return annotationObject;</property>
       <property name="functionDescription">Sets annotation title.</property>
       <property name="returnType">_void</property>
     </QObject>
+    <QObject class="codegen::GeneratedFunction">
+      <property name="objectName"></property>
+      <property name="items">
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">acroForm</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Reference to AcroForm object.</property>
+            </QObject>
+          </property>
+          <property name="actionType">Parameters</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">AcroForm</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">acroForm</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">updatedCatalog</property>
+          <property name="variableType">_PDFObject</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items"/>
+          <property name="actionType">Code</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code">mergeTo(getCatalogReference(), updatedCatalog);</property>
+        </QObject>
+      </property>
+      <property name="functionType">Structure</property>
+      <property name="functionName">setCatalogAcroForm</property>
+      <property name="functionDescription">Set AcroForm to catalog.</property>
+      <property name="returnType">_void</property>
+    </QObject>
+    <QObject class="codegen::GeneratedFunction">
+      <property name="objectName"></property>
+      <property name="items">
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">ocProperties</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Reference to catalog optional content properties.</property>
+            </QObject>
+          </property>
+          <property name="actionType">Parameters</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">OCProperties</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">ocProperties</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">updatedCatalog</property>
+          <property name="variableType">_PDFObject</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items"/>
+          <property name="actionType">Code</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code">mergeTo(getCatalogReference(), updatedCatalog);</property>
+        </QObject>
+      </property>
+      <property name="functionType">Structure</property>
+      <property name="functionName">setCatalogOptionalContentProperties</property>
+      <property name="functionDescription">Set optional content properties to catalog.</property>
+      <property name="returnType">_void</property>
+    </QObject>
     <QObject class="codegen::GeneratedFunction">
       <property name="objectName"></property>
       <property name="items">
@@ -7378,6 +7706,70 @@ return annotationObject;</property>
       <property name="functionDescription">Set document language.</property>
       <property name="returnType">_void</property>
     </QObject>
+    <QObject class="codegen::GeneratedFunction">
+      <property name="objectName"></property>
+      <property name="items">
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">page</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Page</property>
+            </QObject>
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">documentPart</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Document part</property>
+            </QObject>
+          </property>
+          <property name="actionType">Parameters</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">DPart</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">documentPart</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">updatedPage</property>
+          <property name="variableType">_PDFObject</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items"/>
+          <property name="actionType">Code</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code">mergeTo(page, updatedPage);</property>
+        </QObject>
+      </property>
+      <property name="functionType">Structure</property>
+      <property name="functionName">setPageDocumentPart</property>
+      <property name="functionDescription">Sets document part to page.</property>
+      <property name="returnType">_void</property>
+    </QObject>
     <QObject class="codegen::GeneratedFunction">
       <property name="objectName"></property>
       <property name="items">
@@ -7467,62 +7859,5 @@ updateDocumentInfo(qMove(updatedInfoDictionary));</property>
       <property name="functionDescription">This function is used to update trailer dictionary. Must be called each time the final document is being built.</property>
       <property name="returnType">_void</property>
     </QObject>
-    <QObject class="codegen::GeneratedFunction">
-      <property name="objectName"></property>
-      <property name="items">
-        <QObject class="codegen::GeneratedAction">
-          <property name="objectName"></property>
-          <property name="items">
-            <QObject class="codegen::GeneratedParameter">
-              <property name="objectName"></property>
-              <property name="items"/>
-              <property name="parameterName">ocProperties</property>
-              <property name="parameterType">_PDFObjectReference</property>
-              <property name="parameterDescription">Reference to catalog optional content properties.</property>
-            </QObject>
-          </property>
-          <property name="actionType">Parameters</property>
-          <property name="variableName"></property>
-          <property name="variableType">_void</property>
-          <property name="code"></property>
-        </QObject>
-        <QObject class="codegen::GeneratedAction">
-          <property name="objectName"></property>
-          <property name="items">
-            <QObject class="codegen::GeneratedPDFObject">
-              <property name="objectName"></property>
-              <property name="items">
-                <QObject class="codegen::GeneratedPDFObject">
-                  <property name="objectName"></property>
-                  <property name="items"/>
-                  <property name="dictionaryItemName">OCProperties</property>
-                  <property name="objectType">DictionaryItemSimple</property>
-                  <property name="value">ocProperties</property>
-                </QObject>
-              </property>
-              <property name="dictionaryItemName"></property>
-              <property name="objectType">Dictionary</property>
-              <property name="value"></property>
-            </QObject>
-          </property>
-          <property name="actionType">CreateObject</property>
-          <property name="variableName">updatedCatalog</property>
-          <property name="variableType">_PDFObject</property>
-          <property name="code"></property>
-        </QObject>
-        <QObject class="codegen::GeneratedAction">
-          <property name="objectName"></property>
-          <property name="items"/>
-          <property name="actionType">Code</property>
-          <property name="variableName"></property>
-          <property name="variableType">_void</property>
-          <property name="code">mergeTo(getCatalogReference(), updatedCatalog);</property>
-        </QObject>
-      </property>
-      <property name="functionType">Structure</property>
-      <property name="functionName">setCatalogOptionalContentProperties</property>
-      <property name="functionDescription">Set optional content properties to catalog.</property>
-      <property name="returnType">_void</property>
-    </QObject>
   </property>
 </root>