/*
* <soh><rec><symbol>,<subrec><stx><base><exch>(<delay>)(,)(<spread>)||
*/
protected final void encodeHead(final ByteBuffer buffer) {
final DDF_MessageType type = getMessageType();
//
buffer.put(SOH); // <soh>
buffer.put(type.record); // <record>
buffer.put(getSymbolMain()); // <symbol>
buffer.put(COMMA); // ','