# PLEXIL

> open source technology for automation

**Wikidata**: [Q7119633](https://www.wikidata.org/wiki/Q7119633)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/PLEXIL)  
**Source**: https://4ort.xyz/entity/plexil

## Summary
PLEXIL is an open source programming language developed for automation and communicating instructions to machines. Created in 2005, it is characterized as a multi-paradigm language that utilizes static and nominative typing.

## Key Facts
- **Classification:** PLEXIL is a programming language designed for communicating instructions to a machine.
- **Nature:** It is an open source technology.
- **Primary Application:** The language is specifically targeted for automation tasks.
- **Inception:** The technology was established in 2005.
- **Programming Paradigm:** It supports multi-paradigm programming.
- **Typing Discipline:** PLEXIL employs static typing and nominative typing.
- **Website:** The official resource is hosted at http://plexil.sourceforge.net/.
- **Identifiers:** The entity has a Freebase ID (/m/04lj88t) and is documented in English and Japanese Wikipedia entries.

## FAQs
### Q: What type of programming language is PLEXIL?
A: PLEXIL is a multi-paradigm programming language. It uses a typing discipline that is both static and nominative.

### Q: When was PLEXIL created?
A: PLEXIL was inceptioned in 2005.

### Q: Is PLEXIL free to use?
A: Yes, PLEXIL is described as an open source technology, implying it is available for public use and modification.

## Why It Matters
PLEXIL addresses the specific need for reliable instruction communication in automated systems. As a specialized programming language rather than a general-purpose tool, it provides a structured framework for defining how machines execute automated tasks. Its existence as an open-source solution since 2005 has made it accessible for developers and researchers requiring a standardized method for machine control without the cost of proprietary software.

The language's specific typing discipline—nominative and static—suggests a focus on safety and predictability; static typing catches errors before runtime, which is critical in automation where errors can cause physical damage or system failures. By supporting multi-paradigm programming, PLEXIL offers flexibility, allowing developers to choose the most effective approach for different automation logic. This combination of openness, specific automation focus, and robust technical design establishes PLEXIL as a significant tool in the field of machine automation.

## Notable For
- Being a dedicated programming language for **automation**, distinguishing it from general-purpose languages.
- Its specific **typing discipline** (nominative and static), which defines how data types are handled and compared.
- **Open source** accessibility, allowing for community contribution and transparency.
- **Multi-paradigm** support, offering flexibility in programming styles.
- Longevity in the tech space, with an inception date of **2005**.

## Body

### Overview and Definition
PLEXIL is a programming language created to facilitate the communication of instructions to a machine. It functions as a tool for automation, allowing users to define behaviors and processes for automated systems. As an open source technology, its specifications and codebase are publicly accessible.

### Technical Specifications
The language is designed with a rigorous structure defined by its typing discipline. It utilizes **static typing**, where variable types are checked at compile time rather than runtime, and **nominative typing**, where type compatibility is determined by explicit declarations and names rather than structure.

Additionally, PLEXIL is categorized as a **multi-paradigm programming** language. This indicates that it supports more than one programming style (such as imperative, declarative, or functional), giving programmers the flexibility to apply different methods to solve problems within the automation context.

### History and Identifiers
The technology was officially inceptioned in **2005**. It is documented across various knowledge bases, identified by the Freebase ID `/m/04lj88t`. Information about the language is maintained on its official website (http://plexil.sourceforge.net/) and is documented in Wikipedia entries in both English and Japanese.