Models are groups of bricks that are kept together as a set. They can be anything from small houses to entire trains, planes, cars, even complete maps, like cities or mountains! There are over a million models to pick through, see if you can find something cool through the toolbox.
 Making your own models
Creating your own models is pretty simple. First, build whatever you want to make into a model. Here, I build some bricks that say "Hi!"
One your model is built, drag a box around ALL of the bricks that you want to be part of the model. Make sure you have them all selected.
Once you have them all selected, click the Group
button on the toolbar, or press the keyboard shortcut CTRL and G. A blue box will appear around the entire collection of bricks. This shows you that the bricks are now part of a model!
Now that you have your model created, you don't have to do anything else with it. When you click and drag any of the bricks, all the other bricks will move with it. Making models is a great way to simplify your places, as it makes them easier to build on and work with. This is really useful if you're sharing your place, that way other people can understand how you built your place.
A window will pop up asking you what you want to do. Since you want to save a new model, hit Create.
Enter a name and a description of your model. The name should be simple, I named mine "Hi!". the description is where you can write something long about what the model is, how it works, how to use it, stuff like that. If you want people to be able to use your model, mark the checkbox named "Publish for free public use"
 See Also