Upon "Start /?" in a command line Windows XP responds with
START ["title"] [/Dpath] [/I] [/MIN] [/MAX] [/SEPARATE | /SHARED] etc. etc.

Your documentation is identically wrong.  Would you please fix it.

It should READ :-
START "[title]" [/Dpath] [/I] [/MIN] [/MAX] [/SEPARATE | /SHARED]

The actual title is optional - the quotes are sometimes mandatory.

This works
Start /LOW program

This does NOT work
Start /LOW program parameters
That results in a dos error complaining that it cannot find file "parameters"
but after closing the error box it then runs the specified program.
It cost me a lot of time and experimentation before I found quotes were essential,
i.e. no problem with
Start "" /LOW program parameters

My proposed correction is quite pedantic, but is essential and would have saved me a lot of effort.
This correction is very subtle and some people may fail to notice the implication of what is excluded from the [], so I would SUGGEST it be supplemented with an explanation, perhaps detailing when the quotes need to be INCLUDED or when they may be omitted.

NB I only report my observations upon what I had to do to use this command - I am probably blissfully IGNORANT of other "gotchas" with this command.  I found this problem with Windows XP Home Edition and Service pack 3.

Alan