These settings define what elements are suggested by the content assistant, in addition to the ones from the XML Schema schema, inside the xs:annotation/xs:appinfo elements of an XML Schema.
The XSD preferences panel is opened from menu Editor+Content Completion+XSD
→ → +The Content Completion will offer only the XML Schema schema information.
Includes ISO Schematron elements in xs:appinfo.
Includes Schematron 1.5 elements in xs:appinfo.
Includes in xs:appinfo elements from an XML Schema specified from a URL.