/usr/share/racket/collects/raco/main.extreg is in racket-common 6.7-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | (("Racket Package"
"Racket Setup.Document"
("plt")
"doc.ico"
"setup -p \"%1\""))
|