Repost: what's _btobex file for?

[Richard Coutts]

I'm writing my first Bluetooth / Exchange manager code.  The manufacturer of 
a bluetooth device has given me a list of protocols the device understands. 
E.g., "b" follow by a carriage return and linefeed ("b\r\n") will turn the 
device off.

From the Palm documentation I see I can initiate a connection with the 
device by using the command ExgPut with the name parameter set to 
"_btobex://?_single/filename.ext".  I understand the function of the 
"_btobex://?_single/" portion, but why is a filename needed and what is the 
file specified used for?  I had planned on specifying the data using ExgSend 
directly.  E.g.,

   ExgSend (&exgSocket, "b\r\n", 4, &err);
so I'm mystified why a filename is required.
If anyone could clue me in as to what the file does, it would be much 
appreciated.

Thanks,
Rich
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