Объясните что делает код

String^ globalPath;
        void saveAs() {
            saveFileDialog1->Filter = "txt (*.txt)|*.txt|rtf (*.rtf)|*.rtf";
            saveFileDialog1->ShowDialog();
            if (saveFileDialog1->FileName != "")
            {
                String^ pathToFile = saveFileDialog1->FileName;
                std::ofstream saveas;
                saveas.open(msclr::interop::marshal_as<std::string>(pathToFile));
                saveas << msclr::interop::marshal_as<std::string>(this -> richTextBox1->Text);
                saveas.close();
                if (saveToolStripMenuItem->Enabled == false) saveToolStripMenuItem -> Enabled = true;
                globalPath = pathToFile;
            }
        }
 
    private: System::Void colorToolStripMenuItem_Click(System::Object^ sender, System::EventArgs^ e) {
        if (colorDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)
        {
            richTextBox1->ForeColor = colorDialog1->Color;
        }
    }
private: System::Void openToolStripMenuItem_Click(System::Object^ sender, System::EventArgs^ e) {
    if (openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)
    {
        richTextBox1->LoadFile(openFileDialog1->FileName, RichTextBoxStreamType::PlainText);
    }
}
private: System::Void saveToolStripMenuItem_Click(System::Object^ sender, System::EventArgs^ e) {
    if (saveFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)
    {
        richTextBox1->SaveFile(saveFileDialog1->FileName, RichTextBoxStreamType::PlainText);
    }
}
private: System::Void fontToolStripMenuItem_Click(System::Object^ sender, System::EventArgs^ e) {
    if (fontDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)
    {
        richTextBox1->Font = fontDialog1->Font;
    }
}
private: System::Void saveAsToolStripMenuItem_Click(System::Object^ sender, System::EventArgs^ e) {
    saveAs();
}