# <Function> Element

This is the root element of user function XML files. This element is required and has no options. It declares that the XML file defines a user function and not a user measurement. Always place the <Function> element directly after the XML declaration line as shown in example below.

- XML file elements

## Parent Elements

None

## Child Elements

All other elements are descendant elements.

## Attributes

The attributes for this element should never be changed and should be copied from the example in this topic.

xmlns:xsi
  "http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation
  "Functions.xsd"

## Example

- <Function>
- …
- …
- …
- </Function>