DDL dictionary version 2.1.6

_item_type_conditions.code

Name:
'_item_type_conditions.code'

Definition:

   
     Codes defining conditions on the _item_type.code specification.

     'esd' permits a number string to contain an appended standard
   deviation number enclosed within parentheses. E.g. 4.37(5)

     'seq' permits data to be declared as a sequence of values
   separated by a comma <,> or a colon <:>.
   * The sequence v1,v2,v3,. signals that v1, v2, v3, etc.
     are alternative values or the data item.
   * The sequence v1:v2 signals that v1 and v2 are the boundary
     values of a continuous range of values. This mechanism
     was used to specify permitted ranges of an item in 
     previous DDL versions.
      Combinations of alternate and range sequences are permitted.

Type: code

Mandatory item: yes

The data value must be one of the following:

none no extra conditions apply to this data item

esd numbers may have esd values appended within ()

seq data may be declared as a comma or colon separated sequence

Category: item_type_conditions

		contents
		indexes
		sample pages
		purchase
		CIF dictionaries

Crystallographic Information Framework

DDL dictionary version 2.1.6

_item_type_conditions.code

International Tables for Crystallography

Volume G: Definition and exchange of crystallographic data

Edited by S. R. Hall and B. McMahon

IUCrData