6 skills.
Use when asked about OpenDocument Database (`.odb`) files — the ISO/IEC 26300 database-document format that either embeds a database engine or merely stores connection settings/forms/reports pointing at an external database — as distinct from sibling formats [[open-document-text]], [[open-document-spreadsheet]], [[open-document-presentation]].
Use when asked about OpenDocument Formula (`.odf`) files — the ISO/IEC 26300 ZIP+XML mathematical-equation format built on MathML, or its conversion to/from Word's equation editor — as distinct from "ODF" the umbrella acronym for the whole OpenDocument Format family, and from sibling formats [[open-document-text]], [[open-document-spreadsheet]], [[open-document-presentation]].
Use when asked about OpenDocument Graphics (`.odg`) files — the ISO/IEC 26300 ZIP+XML vector-drawing format, its multi-page/multi-layer document model, or how it differs from a single-image format like SVG — as distinct from sibling formats [[open-document-text]], [[open-document-spreadsheet]], [[open-document-presentation]].
Use when asked about OpenDocument Presentation (`.odp`) files — the ISO/IEC 26300 ZIP+XML slide-deck format, its package structure, or conversion to/from `.pptx` — as distinct from [[microsoft-powerpoint]]'s proprietary format, [[google-slides]] (a tool that can import/export ODP, not the format itself), and sibling formats [[open-document-text]], [[open-document-spreadsheet]], [[open-document-graphics]].
Use when asked about OpenDocument Spreadsheet (`.ods`) files — the ISO/IEC 26300 ZIP+XML spreadsheet format, its OpenFormula formula syntax, or conversion to/from `.xlsx` — as distinct from [[microsoft-excel]]'s proprietary format, [[google-sheets]] (a tool that can import/export ODS, not the format itself), and sibling formats [[open-document-text]], [[open-document-presentation]], [[open-document-graphics]].
Use when asked about OpenDocument Text (`.odt`) files — the ISO/IEC 26300 ZIP+XML word-processing format, its package structure, or conversion to/from `.docx` — as distinct from [[microsoft-word]]'s proprietary format, [[google-docs]] (a tool that can import/export ODT, not the format itself), and sibling formats [[open-document-spreadsheet]], [[open-document-presentation]], [[open-document-graphics]].