You can search for identifiers within the package.
in-package search v0.2.0
config.ml
1 2 let cmi_magic_number = "Caml1999I022" let cmt_magic_number = "Caml1999T022"
1 2
let cmi_magic_number = "Caml1999I022" let cmt_magic_number = "Caml1999T022"