Can see the D Lining code here
--Tailor Allowance:
Tailor will add some allowance in measurement to give a regular, classic fitting overcoat.
Chart for allowance inches.
--Less Allowance:
Tailor will add about 3-3.5 inches allowance in measurements to give modern, slim fitting overcoat.
--Final Size:
Tailor will add minimal allowance to give fitted, super slim fitting overcoat.