ConTeXt and Lua programming

System Overview

— Tutorials —	— How-to Guides —
A tutorial is an experience that takes place under the guidance of a tutor. A tutorial is always learning-oriented. System Macros. Recommended reading. Topics: temporary variables, expansion control, argument grabbing and handling, definitions and assignments, branches and decisions, cases, comma separated lists, assignments and parameters, user interaction.) Tutorials, defining Commands with Key=Value arguments and Commands with optional arguments. starttexdefinition: The starttexdefinition uses the start…stop syntax to define new control sequences. Programming in LuaTeX TeX and Lua interactions. Programming Techniques Processing lists (see also Comma Separated Lists) Counters: manipulating counters in context Dimensions: manipulating dimensions (a dimension is a variable storing a length) Evaluation of expressions: evaluating expressions of type number, dimen, glue or muglue ConTeXt and Lua programming/TeX Boxes Random numbers executesystemcommand: processing contents of an environment by another program Common errors	How-to guides are directions that guide the reader through a problem or towards a result. How-to guides are goal-oriented. Lua ConTeXt Lua Documents (CLD) and CLD passing variables Extensions to the Lua IO library (String, Table) Writing a parser with LPeg Processing XML with Lua Processing JSON LuaTeX callbacks Running Lua code externally SQL example Module writing and Passing parameters to modules (old?). For use of modules, see Modules autoinsertnextspace ConTeXt development Wiki pages in Programming and Databases category
— Explanation —	— Reference —
Explanation is a discursive treatment of a subject, that permits reflection. Explanation is understanding-oriented. LuaMetaTeX Reference Manual (2024) New Primitives un LuaMetaTeX (2024) SQL in ConTeXt (2023) ConTeXt Lua Documents (2023) LuaTeX Reference Manual (2020) ECMA SCRIPT in context lmtx - using the optional mujs library (2020) Libraries – Basics (2020) TeX iT (2018) Lua - the ConTeXt libraries (2016) SWIGlib – Basics : use external libraries (2016)	Reference guides are technical descriptions of the machinery and how to operate it. Reference material is information-oriented. Command categories Internals Debugging Catcode TeX commands

Low Level Tex manuals

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  Low Level Tex – Characters (2025)
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  Low Level Tex – Conditionals (2025)
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  Low Level Tex (2025)
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  Low Level Tex – Debugging (2025)
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  Low Level Tex – Pages (2025)
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  Low Level Tex – Alignements (2024)
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  Low Level Tex – Macros (2024)
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  Low Level Tex – Paragraphs (2024)
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  Low Level Tex – Balancing (2024)
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  Low Level Tex – Accuracy (2023)
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  Low Level Tex – Boxes (2023)
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  Low Level Tex – Buffers (2023)
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  Low Level Tex – Lines (2023)
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  Low Level Tex – Localboxes (2023)
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  Low Level Tex – Loops (2023)
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  Low Level Tex – Registers (2023)
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  Low Level Tex – Tokens (2023)
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  Low Level Tex – Inserts (2021)
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  Low Level Tex – Marks (2021)
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  Low Level Tex – Scope (2021)
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  Low Level Tex – Grouping (2020)
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  Low Level Tex – Security (2020)
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  Low Level Tex – Expansion (2019)

It Can Be Done manuals

• 
  It can be done (2024)
• 
  It can be done – Periods (2023)

Sample macros, maybe Old Content

• Macro for Changes (revision history)
• Macro for Changes_Evolution (evolving documents)
• Macro for Headlines formatting#Chapter_Headings|Chapters headers
• Macro for Headlines formatting#Chapter_head_with_absolute_positioning_of_following_text|Chapter head with absolute positioning of following text
• Macro for Section head with underlining to width of last line