short-site-name ⟨no arguments⟩ → description

long-site-name ⟨no arguments⟩ → description

description — a string or nil.

short-site-name and long-site-name return a string that identifies the physical location of the computer hardware, or nil if no appropriate description can be produced.

 (short-site-name) 
→ "MIT AI Lab" 
or → "CMU-CSD" 
 (long-site-name) 
→ "MIT Artificial Intelligence Laboratory" 
or → "CMU Computer Science Department"

The implementation, the location of the computer hardware, and the installation/configuration process.