Definition:
When a data value can be defined as a pre-determined sequence of
characters, optional characters or data names (for which the
definition is also available), it is specified as a construction.
The rules of construction conform to the the regular expression
(REGEX) specifications detailed in IEEE (1991).
Resolved data names for which _item_type_list.construct
specifications exist are replaced by these constructions,
otherwise the data-name string is not replaced.
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.
Example:| {_year}-{_month}-{_day} | typical construction for _date |
Type: text
Mandatory item: no
Category: item_type_list
Copyright © 2005 International Union of Crystallography