Text editor

A text editor is software for creating and modifying documents as character sequences. Unlike a word processor, it need not store layout or rich formatting.

Text buffer: A data structure holding the text currently being edited. Insertions and deletions update this in-memory representation before changes are saved.
Source-code editor: A text editor designed for writing and modifying computer program source code. Programming adds syntax highlighting, code navigation, and language-aware editing to text entry.
String (computer science): A finite sequence of characters treated as data by a computer program. Text editors manipulate strings, though their files and buffers may use richer structures.
Word processor: Software for creating documents with formatted text, page layout, and presentation features. Its focus on visual document formatting contrasts with character-sequence editing.
Cursor (user interface): A visible indicator of the current insertion or interaction position in an interface. Its position determines where typed characters and editing commands take effect.
Integrated development environment: A software suite combining programming tools such as an editor, compiler, and debugger. Editors often serve as the code-writing component inside a broader development environment.
Character encoding: A mapping between characters and numeric values used to represent text digitally. Encoding choices determine which characters a document can represent and how it is stored.
Desktop publishing: The use of software to arrange text and graphics into publication-ready page layouts. Page composition matters more than raw text editing in desktop publishing.
Text encoding: A system for representing characters as numbers or byte sequences. The encoding determines how a saved file's bytes map back to characters.
Vi: A modal text editor created for Unix systems, with distinct command and insert modes. Its mode-based commands offer a distinctive approach to editing text efficiently.

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