Anatomy of a building block

A short name says what it does. If it says ”Blur” then it's a blur filter.
If it's ”Photo” then it's an block that loads a png file.
If it's ”Mix” then it's a block that blends two images together.

With a block that takes 2 or more inputs, it's necessary to make it wider
by resizing it using one of the handles on each side.

Worth knowing:

• Input at the top, output from the bottom
• Yellow triangle when there is no output
• Black circle when you are looking at the output