private void MenuFileOpenInNewWindow_Click(object sender, System.EventArgs e)
{
string startingDir = Path.GetDirectoryName(AppWorkspace.ActiveDocumentWorkspace.FilePath);
DialogResult result = DocumentWorkspace.ChooseFile(AppWorkspace, out string fileName, startingDir);
if (result == DialogResult.OK)
{
Startup.StartNewInstance(AppWorkspace, fileName);
}
}
