#lang scheme/base (require scheme/stxparam (for-syntax scheme/base "syntax-meta.ss")) (provide sig con include import export) (define-syntax-parameter sig (expand-keyword "not valid outside interface")) (define-syntax-parameter con (expand-keyword "not valid outside interface")) (define-syntax-parameter include (expand-keyword "not valid outside interface")) (define-syntax-parameter import (expand-keyword "not valid outside module top-level")) (define-syntax-parameter export (expand-keyword "not valid outside module top-level"))