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UDC Consortium, PO Box 90407, 2509 LK
The Hague, The Netherlands |
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Main
numbers
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| -021 | Properties of existence. Relation. Range. Value, quality. Origin. Order (sequence, priority) |
| -022 | Properties of magnitude. Degree, quantity, number. Temporal values. Dimension. Size |
| -023 | Properties of shape. One-dimensional, line, linear. In the form of symbols. Two-dimensional, Plane, Planar. Three-dimensional. Solid. Edge conditions. Surface conditions. Form |
| -024 | Properties of structure. Position |
| -025 | Properties of arrangement. Layout. Balance. Continuity. Parallelism. Symmetry etc. |
| -026 | Properties of action and movement. Direction. Physical properties. Material state. State of matter. Chemical properties. Properties related to visible light. Hues. Colours |
| -027 | Operational properties. Development. Function. Production. Organizational properties. Membership |
| -028 | Properties of style and presentation. Authorship. Order, arrangement. Content and position |
| -029 | Properties derived from other main classes |
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