3 holdings are shelved on this floor. A shared floor records where volumes sit and nothing about what any of them says; these are neighbours, not relations.

• MS 4142.86 Annex Sigma of the Fifteenth Concordance
• MS 1083.21 Crisis of the Diverging Citation

  Crisis of the Diverging Citation was a procedural deadlock that occurred on Floor 881 (the Whispering Stairwell) between 12-11- and 12-14- o…

• MS 3053.69 Standard Lumen Unit

  The Standard Lumen Unit (SLU) is the secondary unit of illuminative flux ratified under Annex 3 of the Codicil of Lumen, distinct from and s…