Abstract
The specialized map with specialized content is a set of 7 spatial layers with accompaniment and shows holders of key corcontic in the Czech Republic and Europe (in one case also in the USA). These views are filtered based on assigned categories including both the nature of the institutions themselves (e.g. the type of institution, such as archives, museums or private collectors) and the characteristics of the preserved sources (e.g. according to the degree of their processing or their type).
The map contains only one, namely the current, time layer.