olemus
jaotiste ja alajaotiste hierahiline nummerdus,
milles hierarhiatasemeid eraldatakse punktidega
=
a numerical presentation format using the dot as a separator

näide
https://lh3.googleusercontent.com/-XKGoEhbiJHg/VdXvbU5t6-I/AAAAAAAAL9k/SEALwEul0C0/s1600/Google%2BDocs%2BOutline.png

ülevaateid
https://en.wikipedia.org/wiki/Dot-decimal_notation

standardid
https://www.iso.org/obp/ui/#iso:std:iso:2145:ed-2:v1:en

vt ka
- nelik-punktnummerdus
- punktaadress