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To open the Association Rules tab of the Document type configuration dialog box, open the Preferences dialog box (Options > Preferences), go to Document Type Association, use the New, Edit, Duplicate, or Extend button, and click on the Association Rules tab.

In the Association rules tab, you can perform the following actions:
New
Opens the Document type rule dialog box allowing you to create association rules.
Edit
Opens the Document type rule dialog box allowing you to edit the properties of the currently selected association rule.
Delete
Deletes the currently selected association rules from the list.
Move Up
Moves the selected association rule up one spot in the list.
Move Down
Moves the selected association rule down one spot in the list.

By combining multiple association rules you can instruct Oxygen XML Editor to identify the type of a document. Oxygen XML Editor identifies the type of a document when the document matches at least one of the association rules. This tab gives you access to a Document type rule dialog box that you can use to create association rules that activate on any document matching all the criteria defined in the dialog box.

To create a new association rule, click the New button at the bottom of the Association Rules tab, or to edit an existing rule, click the Edit button.

Figure 1. Document Type Rule Dialog Box

The Document type rule dialog box includes the following fields and options:

Namespace
Specifies the namespace of the root element from the association rules set (* (any) by default). If you want to apply the rule only when the root element has no namespace, leave this field empty (remove the ANY_VALUE string).
Root local name
Specifies the local name of the root element (* (any) by default).
File name
Specifies the name of the file (* (any) by default).
Public ID
Represents the Public ID of the matched document.
Attribute Local name
Specifies the local name of the attributes for the root element (* (any) by default).
Attribute Namespace
Specifies the namespace of the attributes for the root element (* (any) by default).
Attribute Value
Specifies the value of the attributes for the root element (* (any) by default).
Java class
Presents the name of the Java class that is used to determine if a document matches the rule. This Java class should implement the ro.sync.ecss.extensions.api.DocumentTypeCustomRuleMatcher interface.
Tip: You can use wildcards (? and *) or editor variables in the Document Type Rule dialog box, and you can enter multiple values by separating them with a comma.