When I "Display Memory", at the top of the "Print System Memory Variables" list is a variable with no name.

Print System Memory Variables

            Pub    C  ""
_ALIGNMENT  Pub    C  "LEFT"
_ASCIICOLS  Pub    N  80          (        80.00000000)
....etc.

Is this anything to be concerned about, and how can I find out what it is?

TIA