Is there a standard way of handling something like
the following?

Function DeleteColumn(inputArray, ColumnNumber)
'. . .
If IsArray(ColumnNumber) Then
[Run the DeleteColumn function itself]
[on each column number in turn]
inputArray = arrOut
DeleteColumn = arrOut
Exit Function
End If
'. . .
End Function

I ended up creating a DeleteColumnAdjunct function
that is the same as the DeleteColumn function
except for name, and ran

Function DeleteColumn(inputArray, ColumnNumber)
'. . .
If IsArray(ColumnNumber) Then
For w = UBound(ColumnNumber) To LBound(ColumnNumber) Step -1
arrOut = DeleteColumnAdjunct(inputArray, ColumnNumber(w))
Next
inputArray = arrOut
DeleteColumn = arrOut
Exit Function
End If
'. . .

but can't help thinking I'm missing the forest for the trees.

Thanks,
Alan Beban