Content is referenced in Collections in the form of links to Master Catalogs or Logs where the actual content is stored and organized according to the Information Manager's needs.

A Collection can reference content in any practicable number of Master Catalogs and Logs.

Any practicable number of Collections can draw on any practicable number of Master Catalogs and Logs.

The upper Collection shown, 'International Alphabet Analysis, Word Type (Collection)' classifies the names given to the letters in the International Alphabet according to the type of word used.

The lower Collection shown, 'International Alphabet Analysis, Character Count (Collection)' classifies the names given to the letters in the International Alphabet according to the length of word used, that is, the length of the string.

In both Collections, the References call up links to the explanatory document stored in the Master Catalog  'International Alphabet (Master Catalog)'.

Collections enable multi-axial classification. The single document 'Delta', for example, is classified here in two wholly different ways yet there is only one document. The one document is thus available in three Knowledge Bases.