Definition:
String of characters specifying the construction of the data
value for the defined data item. The construction is composed
of two entities:
(1) data names
(2) construction characters
The rules of construction conform to the regular expression
(REGEX) specifications detailed in IEEE (1991) and International
Tables for Crystallography Volume G, Chapter 2.5.
Ref: IEEE (1991). IEEE Standard for Information Technology -
Portable Operating System Interface (POSIX) - Part 2: Shell
and Utilities, Vol. 1, IEEE Standard 1003.2-1992. New York:
The Institute of Electrical Engineers. International Tables for
Crystallography (2005). Vol. G, Definition and Exchange of
Crystallographic Data, edited by S. R. Hall and B. McMahon.
Heidelberg: Springer.
Example:| (_year)-(_month)-(_day) | a typical construction for _date |
Type: char
Category: type_construct
Copyright © 2005 International Union of Crystallography