21.1.1.3 Other Subclasses of Stream

The class stream has a number of subclasses defined by this specification. The next figure shows some information about these subclasses.

Class                Related Operators             
broadcast-stream     make-broadcast-stream         
                     broadcast-stream-streams      
concatenated-stream  make-concatenated-stream      
                     concatenated-stream-streams   
echo-stream          make-echo-stream              
                     echo-stream-input-stream      
                     echo-stream-output-stream     
string-stream        make-string-input-stream      
                     with-input-from-string        
                     make-string-output-stream     
                     with-output-to-string         
                     get-output-stream-string      
synonym-stream       make-synonym-stream           
                     synonym-stream-symbol         
two-way-stream       make-two-way-stream           
                     two-way-stream-input-stream   
                     two-way-stream-output-stream  

Figure 21-5. Defined Names related to Specialized Streams