21.1.1.1 Abstract Classifications of Streams
21.1.1.1.1 Input, Output, and Bidirectional Streams
21.1.1.1.2 Open and Closed Streams
21.1.1.1.3 Interactive Streams
Copyright 1996-2005, @lisp. All rights reserved.
![[ATLISP]](https://atlisp.cn/assets/layout/images/logo-white.png)
![[Common Lisp HyperSpec (TM)]](../Graphics/CLHS_Sm.gif)
![[Previous]](../Graphics/Prev.gif)
![[Up]](../Graphics/Up.gif)
![[Next]](../Graphics/Next.gif)
![[Starting Points]](../Graphics/StartPts.gif)
![[Contents]](../Graphics/Contents.gif)
![[Index]](../Graphics/Index.gif)
![[Symbols]](../Graphics/Symbols.gif)
![[Glossary]](../Graphics/Glossary.gif)
![[Issues]](../Graphics/Issues.gif)