## Generic-function: SB-GRAY:STREAM-CLEAR-INPUT [![package](https://img.shields.io/badge/Package-SB--GRAY-5f9ea0.svg?style=social&colorA=999999)](../) [![type](https://img.shields.io/badge/Type-Generic--Function-5f9ea0.svg?style=social&colorA=999999)](../#generic-function) > This is like CL:CLEAR-INPUT, but for Gray streams, returning NIL. > The default method does nothing. ### Lambda list ```cl (stream) ```