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A computer language is a formal language for humans to communicate with a computer, not a natural language. In earlier days of computing (before the 1980s), the term was used interchangeably with programming language, but today, used primarily for taxonomy, is a broader term that encompasses languages that are not programming in nature. Sub-categories (with possibly contended hierarchical relationships) include:

• Construction
  • Programming – for controlling computer behavior
    • Command – for controlling the tasks of a computer, such as starting programs
    • Query – for querying databases and information systems
    • Transformation – for transforming the text of a formal language into text that meets a specific goal
  • Structural
    • Configuration – for writing configuration files
    • Data exchange – examples: JSON, XML
    • Markup – for annotating a document in a way that is syntactically distinguishable from the text, such as HTML
    • Page description – for describing the appearance of a printed page in a higher level than an actual output bitmap
    • Style sheet – for expressing the presentation of structured documents, such as CSS
• Modeling – for designing systems
  • Architecture description – for describing and representing system architecture
  • Hardware description – for modeling integrated circuits
• Simulation – for simulating
• Specification – for describing what a system should do

• Domain-specific language – Programming language specialized to a specific application domain
• Expression language – Domain specific computer language
• General-purpose programming language – Programming language used in many domains
• Lists of programming languages
• Natural language processing – Processing of natural language by a computer

• Media related to Computer languages at Wikimedia Commons