4. The little 'eye' is normally located at right in hau tea:

Presumably the little 'eye' normally symbolizes sun, which south of the equator will be seen rising at right at the eastern horizon and move towards left and reach a maximum at noon. Then follows the decline towards left and the western horizon.

The pupil of the sun 'eye' cannot be drawn in rongorongo, because only the border line is permitted. Exceptions to this rule indicate how another element (sign) has been inserted between the sign and the viewer. The pupil is part of the eye, and therefore it cannot be drawn (otherwise than as a pupil without the rest of the eye).

Focus is foremost on east, the place of birth of all heavenly bodies except the moon moving 'withershins' from west to east.

The little 'eye' is located above the vertical line in the 'front' of the glyph, the line which may be indicating the eastern horizon in the morning. The horizon in the west may similarly be represented by the vertical line at left.

The central, noon, vertical line is a separate unit, not connected with the rest of hau tea. Which makes sense, because at noon sun is not at any horizon. The vertical line is not a real line, just an imaginary one.