Internet Direct (Indy) Version 9.0.1 Beta
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property OnCommandHELP: TBasicHandler;
The server implementation must assign a procedure to the OnCommandHELP event handler to allow responding to the event notification. When OnCommandHELP is unassigned, the text in Messages.ErrorReply is sent to the client connection.
OnCommandHELP can be used to request more specific help detail by including an optional parameter value in the TIdCommand.Params found in ASender.