三細  'Three subtleties, or three subtle marks.' The division, in the Awakening of Faith 大乘起信論, of original ignorance into three marks: (1) the subtle mark of karma, moved by ignorance 無明業相. (2) The [subtle] mark of the subjective perceiver: due to this motion there is a subjective mind 能見相. (3) The [subtle] mark of the objective world. Depending upon the subjective perceiver, the objective world deludedly appears 境界相. This function of these aspects is extremely subtle, as contrasted with the six coarse marks 六麁. 〔起信論 T 1666.32.577a]