You can search for identifiers within the package.
in-package search v0.2.0
Enumerations, represented as a list of cases.
module N : sig ... end
val switch_case : scalar repr -> 'a list repr -> 'a repr t
switch_case k l returns the k-th element of the list l if k ∈ [0,n) or the first element of l otherwise.
switch_case k l
l