Represents piano color, vertical arrangement of hair strands
like piano keys.
Example, F1B/30--The bottom layer is weaved densely with 1B
and the top layer is
weaved less densely with 30. This mix brings the piano or
the frost (highlighted) effects.
D is identical to P but
F or S has highlighted effects.
M: The vertical through mix of hairs..
T: Example, T1B/30--About 4/5 top
portion is vertically arranged by 1B(most) and 30(little)
the 1/5 bottom is arranged by most 30 and little 1B.
2T=TT: Example, 2T1B/30: Top half
has 1B and the bottom half has 30.