Edit Download this page as a PDF Copy page Copy page as Markdown for LLMs Open in ChatGPT Ask ChatGPT about this page Open in Claude Ask Claude about this page Introduction Edit Download this page as a PDF Copy page Copy page as Markdown for LLMs Open in ChatGPT Ask ChatGPT about this page Open in Claude Ask Claude about this page This is for Maintenance Production Perspective:FAQs Basics of nomenclature, short forms and abbreviations Last updated 2 weeks ago Was this helpful? Submit Thanks!