Errors in documentation : psource_ncfile

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The description below in psource_ncfile part of Section 16.2 of the documentation is: "qbardir: Orientation: South=0 or North=0, East=0 or West=1"

But the codes in the relevant part (get_vbc.F) in line 610 is : "Qbar(is)=qbardir(is)*Qbar(is)"

Should the index be -1 instead of 0 in the description?