I'll have to apologize to the list for this "bug". This isn't a Csound bug 
at all. The backslash works just fine when csound is run from the command 
line.

I was running from Lettuce; so, Rory, I guess that's where the problem lies.

Thanks to those of you who took the time to investigate and make 
suggestions.

Art Hunkins

>>>> Today I noticed that the following statement generates a "no legal
>>>> opcode" error (on line 2):
>>>
>>> instr 1, 2, 3, 4, 5, 6, 7, 8, \
>>> 9, 10, 11, 12, 13, 14, 15, 16
>>>