FileSel fs;
String filename;

void xxx::Save()
{
    if(IsEmpty(filename)) { SaveAs(); return; }

    if(!StoreAsXMLFile(*this, "STD", filename + ".ext"))
		Exclamation("Unable to open " + filename);
}

void xxx::SaveAs()
{
    if(!fs.ExecuteSaveAs()) return;
    filename = fs;
    Save();
}