DDLm dictionary version 4.1.0

_definition.class

Name:
_definition.class

Definition:

   
    The nature and the function of a definition or definitions.

Type: Code

The data value must be one of the following:

Attribute Item used as an attribute in the definition of other data items in DDLm dictionaries. These items never appear in data instance files.

Functions Category of items that are transient function definitions used only in dREL methods scripts. These items never appear in data instance files.

Datum Item defined in a domain-specific dictionary. These items appear only in data instance files.

Head Category of items that is the parent of all other categories in the dictionary.

Loop Category of items that in a data file may reside in a loop-list with a key item defined.

Set Category of items that form a set (but not a loopable list). These items may be referenced as a class of items in a dREL methods expression.

Enumeration default: Datum

Category:
definition

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Crystallographic Information Framework

DDLm dictionary version 4.1.0

_definition.class

International Tables for Crystallography

Volume G: Definition and exchange of crystallographic data

Edited by S. R. Hall and B. McMahon

IUCrData