package lambdapi

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Define a ghost signature that contain symbols used by the kernel but not defined by the user.

val sign : Sign.t

The signature holding ghost symbols.

val path : Common.Path.t

The path of the ghost signature

val mem : Term.sym -> bool

mem s returns true if s is a ghost symbol.

val iter : (Term.sym -> unit) -> unit

iter f iters function f on ghost symbols.