Use this skill to author, edit, redline, or validate Microsoft Word .docx files. Covers creating new documents from markdown or templates, editing existing documents in place, generating tracked-changes redlines, adding comments, and accepting/rejecting revisions. For READING existing .docx files, use the harness `read` tool — do not invoke this skill. Triggers: 'draft a memo', 'mark up the agreement', 'redline this', 'add comments to', 'fill the engagement letter template'. Does NOT apply to .pdf, .xlsx, .pptx, or .doc (legacy Word).
Use this skill to author or edit Microsoft PowerPoint .pptx files. Covers generating decks from scratch (HTML+PptxGenJS, Marp markdown-to-slides, or python-pptx), editing existing decks in place, and validating output. For READING existing .pptx files, use the harness `read` tool — do not invoke this skill. Triggers: 'build a deck', 'create slides', 'edit slide N', 'add a chart slide'. Does NOT apply to .pdf, .docx, .xlsx, or .ppt (legacy).
Use this skill to author or edit Microsoft Excel .xlsx files. Covers building workbooks with formulas, editing existing files, recalculating formulas, and scanning for #REF!/#DIV/0!/#VALUE! errors. For READING existing .xlsx files, use the harness `read` tool — do not invoke this skill. Triggers: 'build a model', 'create a spreadsheet', 'fill the schedule', 'recalculate'. Does NOT apply to .pdf, .docx, .pptx, or .xls (legacy Excel).