Editing Markup language (section)

=== Procedural markup ===
:Markup is embedded in text which provides [[Opcode|instructions]] for [[Programming language|programs]] to process the text. Well-known examples include [[troff]], [[TeX]], and [[Markdown]]. It is assumed that software processes the text sequentially from beginning to end, following the instructions as encountered. Such text is often edited with the markup visible and directly manipulated by the author. Popular procedural markup systems usually include [[Process (computing)|programming constructs]], especially [[Macro (computer science)|macros]], allowing complex sets of instructions to be invoked by a simple name (and perhaps a few parameters). This is much faster, less error-prone, and more maintenance-friendly than re-stating the same or similar instructions in many places.