e
    vGreen As Long                              'Green Value
    vBlue As Long                               'Blue Value
    cClrs As Long                               'Pixel count
    iChildren(0 To 1, 0 To 1, 0 To 1) As Long   'Child pointers
    iNext As Long                               'Next reducable node
End Type

Private aNodes() As tNode, cNodes As Long
Private nDepth As Byte, TopGarbage As Long
Private cClr As Long, aReduce(1 To 8) As Long
Private cOps As Long

Private Declare Function timeGet