XSLT Preferences

To configure the XSLT options, open the Preferences dialog box (Options > Preferences) and go to XML > XSLT-FO-XQuery > XSLT.

Oxygen XML Developer offers the possibility of using an XSLT transformer implemented in Java (other than the XSLT transformers that come bundled with Oxygen XML Developer). To use another XSLT transformer, specify the name of the transformer factory class. Oxygen XML Developer sets this transformer factory class as the value of the Java property: javax.xml.transform.TransformerFactory.

The XSLT preferences page allows you to customize the following options:
JAXP XSLT Transformer - Value
Allows you to set the value of the TransformerFactory Java class.
Validation engine - XSLT 1.0
Allows you to select the XSLT engine to be used for validation of XSLT 1.0 documents.
Validation engine - XSLT 2.0
Allows you to select the XSLT engine to be used for validation of XSLT 2.0 documents.
Validation engine - XSLT 3.0
Allows you to select the XSLT engine to be used for validation of XSLT 3.0 documents.
Note: Saxon-HE does not implement any XSLT 3.0 features. Saxon-PE implements a selection of XSLT 3.0 (and XPath 3.0) features, with the exception of schema-awareness and streaming. Saxon-EE implements additional features relating to streaming (processing of a source document without constructing a tree in memory. For further details about XSLT 3.0 conformance, go to http://www.saxonica.com/documentation/index.html#!conformance/xslt30.
XSLT Editor Content Completion Options link
Use this link to switch to the XSLT Content Completion preferences page, where you can configure the XSLT content completion options.