'detachment', seclusion, is according to Niddesa,
of 3 kinds:
(1) bodily detachment (kāya-viveka), i.e. abiding in
solitude free from alluring sensuous objects;
(2) mental detachment (citta-viveka),
i.e. the inner detachment from sensuous things;
(3) detachment from the
substrata of existence (upadhi-viveka).
In the description of the 1st absorption,
"detached from sensuous things" (vivicc' eva kāmehi) refer,
according to Vis.M. IV, to 'bodily detachment';
the words "detached from karmically disadvantageous things" (vivicca akusalehi dhammehi) refer to
the words "born of detachment" (vivekaja),
to the absence of the 5 hindrances.