h6. [[BufferManager]] h6(. » [[BufferManager SWI Calls|SWI Calls]] h6((. » [[Buffer_InternalInfo]] h6(((. » [[Buffer Service Codes|Service Codes]] h6((((. » Buffer Service Code 4 |_<^{width:3em}. Entry | | |<^. R0 |<^. 4 (Reason code) | |<^. R1 |<^. Internal buffer ID | |<^. R12 |<^. Value returned by [[Buffer_InternalInfo]] | h4. Use This call reads the next byte to be removed from a buffer without actually removing it. The C flag is set if the operation failed.