Outliner

Part of speech: noun

Pronunciation: /ˈaʊtlaɪnə/

Definitions

1. An individual who prepares a preliminary plan or summary of a written or spoken work ; a device or program feature designed to produce or display outlines of content
2. Someone who organizes main ideas and supporting details before full development ; a tool used to structure text or information hierarchically
3. A person responsible for drafting the main points or framework of a document ; technology that helps arrange information in outline form for clarity or editing

Etymology: The "-er" ending is the older and more travelled part. It goes back to Latin "-arius", which passed into Old French as "-ier" and then into Middle English as "-er". Old English had a related "-ere" ending that marked a person or thing connected with an action. The rest is simply "outline" with that ending attached, so the person sense means one who produces an outline. The software sense follows the same pattern, applying the name to a tool that does the same job of arranging points into an outline.

Synonyms: sketcher, delineator