Micro-annotation

It is composed of three tiers: an annotation client that deals with micro-annotations (i.e. within-file annotations), a collection tagger, which deals with macro-annotations (i.e. across-files annotations), and a collaborative annotation subsystem, which manages large-scale annotation tasks that can be shared among different research centres.

Source: wiktionary

Two strategies have been used to obtain accurate annotations: corporeal annotation and micro-annotation.

Source: wiktionary

Moreover, users of Hypermedia Berlin are able to add micro-annotations by geo-tagging points, lines, and polygons, such as Motzstrasse 48 in the year 2003, or the northwest corner of Leipzigerstrasse and Wilhelmstrasse from 1920 to 1945.

Source: wiktionary

A "micro-annotation” that says “my grandmother lived here from 1910–1987” participates in a “writerly” project of memory that the participatory architecture of Web 2.0 applications has made possible.

Source: wiktionary