TIdQotdUDPServer defines an implementation framework for a UDP-based Quote of the Day Protocol or QUOTD server as described in the Internet Standards document:
RFC 865 - Quote of the Day Protocol (http://www.rfc-editor.org/rfc/rfc865.txt)
QUOTD is a simple protocol for retrieving a short quote from a server.
DefaultPort is a published property in TIdQOTDUDPServer that identifies the default port number for the server, as described in the Quote of the Day Protocol specification. The default value for DefaultPort is IdPORT_QOTD.
Create is the constructor for the object instance that creates a new TIdQOTDUDPServer instance and sets the default port to the standard port number used by the Quote of the Day protocol (IdPORT_QOTD).
OnCommandQOTD is an event triggered when a client queries for the current Quote of the Day. You set the AQuote string to the quote of the day that you wish to send to the client.