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# xdExpressionLiteral simpleType

Specifies a type for identifying whether a value should be interpreted as a literal value or an XPath expression that returns a value.

## Type

`xsd:NMTOKEN`

## Remarks

The xdExpressionLiteral type is used for the valueType attribute in the davAdapter and emailAdapterelements.

Note This item is not supported when the Disable Service Pack features option on the Advanced tab of the Options dialog box in InfoPath is selected or when Microsoft Office 2003 Editions Service Pack 1 or later is not installed. Any form defined by a form definition file (.xsf) that includes this item cannot be opened in InfoPath when service pack features are disabled or unavailable.

## Example

The following example is the declaration of the xdExpressionLiteral type:

    <xsd:simpleType name="xdExpressionLiteral">
      <xsd:restriction base="xsd:NMTOKEN">
        <xsd:enumeration value="expression" />
        <xsd:enumeration value="literal" />
      </xsd:restriction>
    </xsd:simpleType>

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