What does #0 mean?

[nmoorewsu]

Playing around with for loops today and discovered that while a for will not execute if you feed 0 to the N terminal, the output array will propagate through to a sum operation.  

The sum is zero (because the sum of nothing is nothing?) but what does the "#0" error(?) code mean?  Is it shorthand for empty array or NULL?  Where should I look in the Labview help for documentation on this?

[Darin.K]

Change your 0 constant to a 1 or 2 and see what you get then...

[crossrulz]

It is saying that you have an empty array (0 elements).

[nmoorewsu]

Ok, so array size. Thanks.  Again, where in the documentation should I look for this?  

[RavensFan]

It's the kind of thing you learn by taking the tutorials.

I don't think anyone who has used LabVIEW would know where to find such a specific thing in documentation.