: Documents like the Sewerage & Drainage Construction Manual may contain section or item numbers such as "309" alongside various technical detail files.

: These records are used to track Expected Progeny Differences (EPDs) , which help ranchers predict traits like birth weight, growth rate, and docility in offspring [12].

: In source code for file archivers like Trinity Desktop's Ark , rar.cpp:309 refers to a specific line of code within the RAR extraction logic [7].

In livestock records, "309 RAR" (often seen as or Eveready 309 RAR ) refers to a notable bull from the Mustang Angus Ranch or similar pedigree databases [12].

: Full names often include "Eveready 309 RAR" or "RAR 309-1055" [12].

While less common, the string "309.rar" or similar may appear in technical contexts: