diff -r ae7f7fbb9cda -r 07e65a4c6611 src/main.cpp
--- a/src/main.cpp	Mon Jul 04 15:37:22 2022 +0300
+++ b/src/main.cpp	Mon Jul 04 19:53:13 2022 +0300
@@ -52,7 +52,6 @@
 	std::unique_ptr<EditTools> tools;
 	std::unique_ptr<AxesLayer> axesLayer;
 	std::unique_ptr<GridLayer> gridLayer;
-	std::unique_ptr<QTextDocument> textbuffer;
 	std::unique_ptr<QTextCursor> textcursor;
 	Model* model;
 };
@@ -484,6 +483,7 @@
 			},
 		}, action);
 		*/
+		
 	};
 	const auto restoreSettings = [&]{
 		recentlyOpenedFiles = setting<Setting::RecentFiles>();
@@ -523,15 +523,8 @@
 			data->canvas->setLayerEnabled(data->axesLayer.get(), setting<Setting::DrawAxes>());
 			data->canvas->addRenderLayer(data->gridLayer.get());
 			data->canvas->addRenderLayer(data->tools.get());
-			QString modeltext;
-			QTextStream stream{&modeltext};
-			::save(*model, &stream);
-			data->textbuffer = std::make_unique<QTextDocument>();
-			data->textbuffer->setPlainText(modeltext);
-			data->textbuffer->setDefaultFont(monospace());
-			data->textbuffer->setDocumentLayout(new QPlainTextDocumentLayout(data->textbuffer.get()));
-			new LDrawSyntaxHighlighter{data->textbuffer.get()};
-			data->textcursor = std::make_unique<QTextCursor>(data->textbuffer.get());
+			new LDrawSyntaxHighlighter{model};
+			data->textcursor = std::make_unique<QTextCursor>(model);
 			documents.setModelPayload(modelId, data);
 			QObject::connect(
 				data->tools.get(),
@@ -716,7 +709,7 @@
 		if (modelSubWindow != nullptr) {
 			if (ModelData* data = documents.findPayload<ModelData>(modelSubWindow->modelId)) {
 				checkEditingModeAction(data->tools->currentEditingMode());
-				ui.modelEdit->setDocument(data->textbuffer.get());
+				ui.modelEdit->setDocument(data->model);
 				ui.modelEdit->setTextCursor(*data->textcursor);
 			}
 		}
@@ -775,12 +768,6 @@
 		&QPlainTextEdit::textChanged,
 		[&]{
 			if (ModelData* data = currentModelData(&ui, &documents)) {
-				Model* const model = data->model;
-				model->clear();
-				QString text = ui.modelEdit->toPlainText();
-				QTextStream stream{&text};
-				Parser parser(stream);
-				parser.parseBody(*data->model);
 				documents.loadDependenciesForAllModels(libraries);
 				data->canvas->update();
 			}