Teaching on this key factor in the Satipatthana Sutta, including the four commentarial categories:
Clear comprehension of purpose (Pāli: sātthaka)
Clear comprehension of suitability (sappāya)
Clear comprehension of domain (gocara):[12]
Clear comprehension of non-delusion (asammoha)
Body as a construct. On touch (phassa) and touching and being touched (phusati). Differing senses create a different relationship - 'seeing', 'hearing' and 'touching' as analogies for attending to something create a different kind of relationship to ourselves. The visual is overdetermined, often at the expense of touch. Feeling the body as an experience of touch rather than being 'observed'.'.