Aleo Instructions
Aleo Instructions (sometimes called "Aleo IR") is the low-level bytecode that Leo compiles to. When you run leo build, the compiler translates your Leo source into Aleo Instructions, which is what actually gets deployed on-chain and executed by the Aleo Virtual Machine.
You rarely write Aleo Instructions directly, but you'll see them in build output, debugging sessions, and advanced optimization work. Understanding the instruction format helps when interpreting compiler errors or analyzing deployed programs that don't have published Leo source.