//! Surface syntax for `by …` proof statements (one submodule per form).
pub use ByCasesStmt;
pub use ByContraStmt;
pub use ByEnumerateStmt;
pub use ByExtensionStmt;
pub use ByFamilyStmt;
pub use ;
pub use ByStructStmt;
pub use ;
pub use ByInducStmt;