gdul bya'i khams dbang bzhi - four degrees of excellence of students [of the four orders of tantra sngags rgyud sde bzhi power of meditating on the path: 1) stong pa dang lha'i rnal 'byor mngon du byed pa la depending on many external actions; 2) bya ba very few external actions and internal samadhi both both equally, 3) mostly inner samadhi,, 4) not depending on extenal actions gong na med pa'i rnal 'byor skyed nus pa) [IW]