Arduino Nano Board PictoBlox Extensions

The Stage is the term for the background of the project but can have scripts, backdrops (costumes), and sounds, similar to a sprite. It has some restrictions on sprite functionality, such as motion and size blocks.

Sprites, either user-created, uploaded, or found in the sprites library, are the objects that perform actions in a project. While the Stage can also be programmed in a project, most projects have at least one sprite as well because only sprites can move. 

A script is a collection or stack of blocks that all interlock with one another. The blocks and their order are very important, as they determine how sprites interact with each other and the backdrop. 

The Green Flag is a programming feature that, when clicked, will start all scripts in that project that are hatted with the When Green Flag Clicked block. More simply, this block starts the project.

A costume is one out of possibly many "frames" or alternate appearances of a sprite. Sprites can change their look to any of its costumes. They can be named, edited, created, and deleted, but every sprite must have at least one costume. One of the most common uses of costumes is to make an animation for a game or other project.

The block palette is an area of the graphical user interface located between the stage, sprite pane and scripting area. The blocks are located to the right of the categories, which can be clicked to automatically scroll to that category. The whole list can be scrolled through.