Answers to the last two posts. The reason I was using the SHUTDOWN command rather than the /SHUTDOWN ccleaner parameter was that on my old XP machine, the /SHUTDOWN parameter waited nearly a minute to act, whereas, I could code "T00" on the SHUTDOWN command to make it run immediately.
I tried removing the "/i" parameter, however, the script did not wait for the ccleaner program to close. It ran my SHUTDOWN command immediately. I also tried using the "/B" parameter to not run ccleaner in another window and got the same results just described.
As for the description of the "/wait" parameter, I agree that the language is rather ambiguous to me as well. I am satisfied using the ccleaner /SHUTDOWN parameter for now and will continue to nose around for a way to have the batch file wait for the program initiated by the "start" command to complete.