Step by step:
1. Write code for positioning/creating your model.
2. Save it as model.bb. Make sure it's saving in the same folder as the code that is including it.
3. Include the file into your main code.
OR
1. Write code for positioning/creating your model.
2. Put this code in a function.
3. Simply copy the function to your main code.
4. call the function to create your model.
Both steps will work fine.
1. Write code for positioning/creating your model.
2. Save it as model.bb. Make sure it's saving in the same folder as the code that is including it.
3. Include the file into your main code.
OR
1. Write code for positioning/creating your model.
2. Put this code in a function.
3. Simply copy the function to your main code.
4. call the function to create your model.
Both steps will work fine.