You can search for identifiers within the package.
in-package search v0.2.0
type opn =
| Set
| Plus
| Minus
type vardef = string * opn * string
type rule = string list * vardef list
type phrase =
| Vardef of vardef
| Rule of rule
module SMap : sig ... end
type env = {
env_vars : string SMap.t;
env_targets : string SMap.t SMap.t;
}
val empty_env : env
val add_vars : env -> string SMap.t -> env
val get_value : env -> SMap.key -> string