27. spreadsheetFunctions
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## 27. spreadsheetFunctions

    <spreadsheetFunctions
      location = anyURI
    />

Specifies the location of an XML document containing user-defined spreadsheet functions.

This XML document contains the definitions of the functions (as Java™ class names or directly using the formula language) as well as their documentations (for online use in the Formula Editor).

This XML document must conform to the `http://www.xmlmind.com/xmleditor/schema/spreadsheet/functions` W3C XML Schema. A complete XXE configuration for writing such documents is found in ``XXE_install_dir`/doc/configure/functions_config/`.

Specify `spreadsheetFunctions` in customize.xxe to add general purpose spreadsheet functions.

Specify `spreadsheetFunctions` in XML application specific XXE configuration files (example: `invoice.xxe`) if you want make your spreadsheet functions visible only when certain types of documents (example: `Invoices`) of are opened.

Adding user-defined spreadsheet functions to XXE is extensively described in XMLmind XML Editor - Using the Integrated Spreadsheet Engine.

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