I'm not sure what you mean by drop down... what software are you using? There are many LDraw editors.
This is how you combine multiple LDraw models into one file (not sure if that's what you want to do).
If you attach them here, I would gladly combine them for you, if that's what you wish; but I would highly recommend reading the standard, or reading your editors documentation for Multi Part Documents.
This is how you combine multiple LDraw models into one file (not sure if that's what you want to do).
If you attach them here, I would gladly combine them for you, if that's what you wish; but I would highly recommend reading the standard, or reading your editors documentation for Multi Part Documents.