code: public void startEnvelope(String method)
          throws IOException
      {
          int offset = _offset;
  
          if (SIZE < offset + 32) {
              flushBuffer();
              offset = _offset;
          }
  
          _buffer[_offset++] = (byte) 'E';
  
          writeString(method);
      }
docs: Starts an envelope.
  
  <code><pre>
  E major minor
  m b16 b8 method-name
  </pre></code>
  
  @param method the method name to call.