To enter a new Morphology rule, use the Morphology Table link from the front page. Then click on the Add New Language Morphology link.

Actions	Language	Morphology Tag	Root	Surface	Used
	English	third singular	have	has	true

Language - Currently this column is not used, but in the future, this will allow different language rules to coexist.
Morphology Tag - This is the type of translation the rule represents. The Morphology Tag field is set to third singular which is the third person singular form of the verb.
Root - The root form is the base form of the word (the form with no prefixes or suffixes).
Surface - The surface form is the form the user will enter to make proper sounding English.
Used - This is a system generated boolean flag that tells Morphology to use this rule in recognizing root forms. An example of when not to use a rule would be a reflexive rule where the root and surface forms are the same. For example, the verb run has the same surface and root forms for the first person singular form (I run). Since the system should not recognize run turning into run, this rule should be excluded from recognition.

For more information on root and surface patterns, see the Morphology concepts documentation.

The system uses this table when a word is not found in the Dictionary. It cruises down the surface column looking for any match. If one is found, the word is replaced with the root form and looked up in the Dictionary. If found, the root form is used from this point forward in processing.

After entering the rule, you may test that the system will correctly recognize the root word by selecting the Recognize Root Morphology link. In the dialog that appears, type the word has into the Enter Word field. After pressing the Recognize button, the root form and the Third Singular tag should appear in the resulting table.

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