diff -r 2f383e88acf4 -r 185eb297dc1e src/model.cpp
--- a/src/model.cpp	Mon Sep 27 21:04:45 2021 +0300
+++ b/src/model.cpp	Tue Sep 28 00:10:29 2021 +0300
@@ -18,6 +18,7 @@
 
 #include <QBrush>
 #include <QFile>
+#include <QFileInfo>
 #include <QFont>
 #include "model.h"
 #include "modeleditcontext.h"
@@ -36,7 +37,7 @@
  */
 Model::Model(const QString& path, QObject *parent) :
 	QAbstractListModel{parent},
-	path{path}
+	storedPath{path}
 {
 	connect(this, &Model::dataChanged, [&](){ this->needRecache = true; });
 }
@@ -187,6 +188,39 @@
 }
 
 /**
+ * @brief Gets the path to the model
+ * @return path
+ */
+const QString& Model::path() const
+{
+	return this->storedPath;
+}
+
+/**
+ * @brief Sets the path to the model
+ * @param path New path to use
+ */
+void Model::setPath(const QString &path)
+{
+	this->storedPath = path;
+	this->header.name = QFileInfo{path}.fileName();
+	// Update the "Name: 1234.dat" comment
+	if (this->body.size() >= 2)
+	{
+		const ldraw::id_t id = this->body[1]->id;
+		if (this->isA<ldraw::MetaCommand>(id))
+		{
+			const QString& textBody = this->body[1]->getProperty<ldraw::Property::Text>();
+			if (textBody.startsWith("Name: "))
+			{
+				auto editor = this->edit();
+				editor.setObjectProperty<ldraw::Property::Text>(id, "Name: " + this->header.name);
+			}
+		}
+	}
+}
+
+/**
  * @brief Gets the GL polygons of the object at the specified position in the model
  * @param index Index of object in the model
  * @param polygons_out Vector to add polygons into
@@ -270,16 +304,60 @@
 /**
  * @brief Write out the model as text
  */
-void Model::save() const
+bool Model::save(QTextStream &errors) const
 {
-	QFile file{this->path};
+	QFile file{this->storedPath};
 	if (file.open(QIODevice::WriteOnly))
 	{
 		QTextStream out{&file};
 		for (const ModelObjectPointer& object : this->body)
 		{
-			out << object.get()->textRepresentation() << "\r\n";
+			out << object.get()->toLDrawCode() << "\r\n";
 		}
 		file.close();
+		if (out.status() != QTextStream::Ok)
+		{
+			errors << tr("Write error while writing to %1").arg(this->storedPath);
+			return false;
+		}
+		else
+		{
+			return true;
+		}
+	}
+	else
+	{
+		errors << tr("Could not open %1 for writing: %2")
+			.arg(this->storedPath)
+			.arg(file.errorString());
+		return false;
+	}
+}
+
+/**
+ * @brief Modifies the !LDRAW_ORG line so that it becomes unofficial
+ */
+void Model::makeUnofficial()
+{
+	if (this->body.size() >= 4)
+	{
+		const ldraw::id_t id = this->body[3]->id;
+		if (this->isA<ldraw::MetaCommand>(id))
+		{
+			const QString& body = this->body[3]->getProperty<ldraw::Property::Text>();
+			if (body.startsWith("!LDRAW_ORG ") and not body.startsWith("!LDRAW_ORG Unofficial_"))
+			{
+				QStringList tokens = body.split(" ");
+				tokens[1] = "Unofficial_" + tokens[1];
+				// Remove the UPDATE tag
+				if (tokens.size() >= 4 && tokens[2] == "UPDATE")
+				{
+					tokens.removeAt(3);
+					tokens.removeAt(2);
+				}
+				EditContext editor = this->edit();
+				editor.setObjectProperty<ldraw::Property::Text>(id, tokens.join(" "));
+			}
+		}
 	}
 }
\ No newline at end of file