## 4.1. Structure of a Program

A program in AVAP is built from code blocks that execute linearly. A block is a section of the AVAP program text that executes as a unit. Code blocks in AVAP include:

* A script file.
* The body of a function.
* An import statement for additional files.

Each line of code in AVAP is considered a block and executes sequentially. There is no interactive execution, deferred execution, or object classes.