A Footnote or Appendix Carrying More Information

This page is the CodyCross answer for the clue below from Deserts of the world, Group 1611, Puzzle 2 (Exposed Bedrock).

Question is: A Footnote or Appendix Carrying More Information

and the answer is: EXCURSUS

Word Meaning:

EXCURSUS — A fuller treatment (in a separate section) of a particular part of the text of a book, especially a classic.

Definitions from Wiktionary.