What is "Unwired terminal current capacity"?

[Sergei Troizky 26]

The I182E "NX-Series I/O" manual mentions "Unwired terminal current capacity" in the unit specs.
What is the meaning of this parameter?
 

[photovoltaic 121]

I believe that's how much current you can take from the neighboring terminal which is in common with the terminal getting current provided to it. This current is usually for powering "unwired terminals". Its essentially a measure of the current capacity if you were to run current in one terminal and out of the one beside it.

[photovoltaic 121]

Some people might find it convenient to daisy-chain several devices, and the NX terminals offer a convenient way to do it, but you'll likely melt a terminal or two if you're not careful.