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GDL has template directives that define the GDL schema by using templates.
GDL contains the following template directive:
- *Template defines a template construct.
Several other directives are used within the template construct to complete the definition. The following lists describes some of the directives that are used within the template construct:
*Name is the name of the data entry keyword to bind to.
*Inherits inherits the properties of the specified template.
*Members uses the specified template trees in the binding process.
*Type is the type of object that this template defines.
*Production, *Member, and *Occurs define the content that is allowed for a construct. Note that the content depends on the configuration.
*Additive describes which definition of an entry shall be shown in the snapshot if the entry is multiply defined.
*ValueType assigns a data type to the value of an attribute.
*DataType, *ElementType, *ArrayLabel, and *ElementTags define the data types.
For more information about template directives, see GDL Template Directives