Major Section 7.7.2 of the spec lists variables that must be predefined:
| Name | Namespace URI | Type | Default value | External |
|---|---|---|---|---|
| encoding | http://www.ogf.org/dfdl/dfdl-1.0/ | xs:string | 'UTF-8' | true |
| byteOrder | http://www.ogf.org/dfdl/dfdl-1.0/ | xs:string | 'bigEndian’ | true |
| binaryFloatRep | http://www.ogf.org/dfdl/dfdl-1.0/ | xs:string | 'ieee’ | true |
| outputNewLine | http://www.ogf.org/dfdl/dfdl-1.0/ | xs:string | '%LF;' | true |
