A review of the first tetrad discussing adjusting the mode of observation. For samatha mode, the preliminary signs of breath touch is calmed to a perception of the feint effect of the breathing process.
Similes for the experience of touch and contact (step 3): musician practicing an instrument; a person sawing a log; gatekeeper guarding arrivals and departures; an embroiderer threading a needle. Subdivisions of the emergence of the nimitta and nama rupa also presented as the "whole body".
Discussion of the sixteen steps; the letting go of each tetrad, and how each one achieves the Four Establishments of Mindfulness. Focus on the first tetrad about the body.
