Using Delphi's HELPINST application, you can merge the help file for the TRPCBroker component into the Delphi help system. Then, when you are working with the TRPCBroker component in Delphi, you can press F1 and get context-sensitive help for it and for any of its properties.
To install this help file in Delphi 2.x:
"Cannot find the BROKER.HLP file. Do you want to try to find this file yourself?"
If you get this message, click YES. Navigate to the \HELP subdirectory of the main Delphi directory, and choose BROKER.HLP and click on the Open button. Windows opens the help file, and the path to the help file should be remembered in the future.
You can find related information about merging help into Delphi's help in Delphi's Component Writer's Guide manual (Delphi Version 2.0: pp. 77-81).