Explainer and Editor

(n.) One who explains; an expounder or expositor; a commentator; an interpreter.

noun

• A person responsible for the editorial aspects of publication; the person who determines the final content of a text (especially of a newspaper or magazine.
  • synonyms: editor in chief
• Computer science. ( a program designed to perform such editorial functions as rearrangement or modification or deletion of data).
  • synonyms: editor program

(n.) One who edits; especially, a person who prepares, superintends, revises, and corrects a book, magazine or newspaper, etc., for publication.