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There are a lot of acronyms and abbreviations in LibreOffice that will be unfamiliar to new contributors. Please add them to this list as you come across them.

Warning: Abbreviations and acronyms can be useful to communicate efficiently in some contexts (for example, the development IRC channel), but please remember that they can be off-putting to newcomers, be perceived as gatekeeping, and be a barrier to accessibility, especially in a volunteer-driven and multilingual project like LibreOffice. So please use them with moderation and spell out when practical.

General / not only used here

• a11y - Accessibility
• CJK - Chinese, Japanese and Korean
• CTL - Complex Text Layout
• HIG - Human Interface Guidelines
• i18n - internationalisation
• JRE - Java Runtime Environment
• l10n - localisation
• LTR - Left-to-Right
• MAR - Mozilla ARchive update format
• MDI - Multiple Document Interface
• MRU - Most Recently Used
• OS - Operating System
• RTL - Right-to-Left
• UI - User Interface
• UX - User Experience
• SDBC - Star DataBase Connectivity
• WIP - Work in Progress

Subsystem labels

• SAL - System Abstraction Layer
  • for additional confusion there are 2 of these:
    • "sal" is the lowest-level OS abstraction and runtime library, which also contains OSL and RTL
    • "SAL" is a part of VCL that abstracts different window systems (lots of classes with "Sal" prefix)
• VCL - Visual Class Library
• RTL - RunTime Layer
• OSL - Operating System (abstraction) Layer
• Sw - StarWriter
• UNO - Universal Network Objects
• URE - UNO Runtime Environment
• Sc - StarCalc
• Sd - StarDraw (since the code is shared, also used for Impress)
• Sm - StarMath
• Sv - StarView
  • Svx - StarView eXtended functionality
  • Svtools or svt - StarView tools
• Sfx - Star Framework

Components and other applications

Referring to parts of the application and the UI, or other software.

• AOO - Apache OpenOffice
• LO - LibreOffice
• MSO - Microsoft Office
• NB - Notebook Bar
• OOo - OpenOffice.org
• SB - Sidebar
• SC - Start Center
• TB - Thunderbird
• VS - Visual Studio

Quality Assurance

• NAB - Not A Bug (a bug resolution)
• OP - Original Poster (the bug description)
• QA - Quality Assurance
• STR - Steps To Reproduce
• WF - Won't Fix (a bug resolution)
• WFM - Works For Me (a bug resolution)

See also

• Abbreviations relevant to the Marketing project
• LibreOffice Developer's Guide: Glossary
• Abbreviations used in Calc functions documentation
• Many more general abbreviations are commonly used in chats, forums, newsletters and comments. See other lists like AllAcronyms' Forum Abbreviations to find their meaning.