 The logical study of information resembles in spirit other more traditional endeavours, such as the logical study of the concept of truth or computation: in all these cases the object of logical study plays a central role in the intuitive understanding of logic itself. The three perspectives on qualitative information presented in this entry (ranges, correlations, and code) portrait the diverse state of the art in this field, where many directions of research are open, both as a way of searching for unifying or interfacing settings for the different stances, and of deepening the understanding of the main qualitative features of information (dynamics, aboutness, encoding, interaction, etc.) within each stance itself. 