Constant values, input editors, and drawers
You’ve learned how data flows through a composition (How events and data travel through a composition). But how does the data get into the composition in the first place?
There are two main ways. One is to pull in data from the world outside the composition — files on your computer, input devices such as a mouse or video camera, information communicated over a network, and so on. A good starting point to learn about this is to search the Node Library for nodes whose titles begin with Receive.
The other way to get data into a composition is to enter it yourself. This section explains how.