Module Sidekick_base.Arg
Concrete implementation of Sidekick_core.TERM
this module gathers most definitions above in a form that is compatible with what Sidekick expects for terms, functions, etc.
module Fun : sig ... end with type t = Fun.tA function symbol, like "f" or "plus" or "is_human" or "socrates"
module Term : sig ... end with type t = Term.t and type store = Term.storeTerm structure.