A powerful embeddable scripting language

Lua is a powerful, fast, light-weight, embeddable scripting language. It
combines simple procedural syntax with powerful data description constructs
based on associative arrays and extensible semantics. Lua is dynamically
typed, runs by interpreting bytecode for a register-based virtual machine,
and has automatic memory management with incremental garbage collection,
making it ideal for configuration, scripting, and rapid prototyping.