"Returns a binary output stream which accepts objects of type ELEMENT-TYPE \(a subtype of OCTET) and makes available a sequence that contains the octes that were actually output."
"Creates an IN-MEMORY output stream, binds VAR to this stream and then executes the code in BODY. The stream stores data of type ELEMENT-TYPE \(a subtype of OCTET). The stream is automatically closed on exit from WITH-OUTPUT-TO-SEQUENCE, no matter whether the exit is normal or abnormal. The return value of this macro is a vector \(or a list if AS-LIST is true) containing the octets that were sent to the stream within BODY."