+ <xs:element type="number_expression" name="contrast" minOccurs="0" default="1.0"> <xs:annotation><xs:documentation>The contrast of the layer. Can be an expression.</xs:documentation></xs:annotation></xs:element>
+ <xs:element type="number_expression" name="saturation" minOccurs="0" default="1.0"> <xs:annotation><xs:documentation>The saturation of the layer. Can be an expression.</xs:documentation></xs:annotation></xs:element>
+ <xs:element type="number_expression" name="brightness" minOccurs="0" default="1.0"> <xs:annotation><xs:documentation>The brightness of the layer. Can be an expression.</xs:documentation></xs:annotation></xs:element>
+ </xs:all>
+ </xs:complexType>
+ </xs:element>
+ <xs:element name="levels" minOccurs="0">
+ <xs:annotation>
+ <xs:documentation>
+ Properties regarding level adjustments. They are addressable from expressions as layer.[id].level.[property].
+ </xs:documentation>
+ </xs:annotation>
+ <xs:complexType>
+ <xs:all>
+ <xs:element type="number_expression" name="min_input" minOccurs="0" default="0.0"> <xs:annotation><xs:documentation>The minimum input level of the layer. Can be an expression.</xs:documentation></xs:annotation></xs:element>
+ <xs:element type="number_expression" name="max_input" minOccurs="0" default="1.0"> <xs:annotation><xs:documentation>The maximum input level of the layer. Can be an expression.</xs:documentation></xs:annotation></xs:element>
+ <xs:element type="number_expression" name="gamma" minOccurs="0" default="1.0"> <xs:annotation><xs:documentation>The gamma correction of the layer. Can be an expression.</xs:documentation></xs:annotation></xs:element>
+ <xs:element type="number_expression" name="min_output" minOccurs="0" default="0.0"> <xs:annotation><xs:documentation>The minimum output level of the layer. Can be an expression.</xs:documentation></xs:annotation></xs:element>
+ <xs:element type="number_expression" name="max_output" minOccurs="0" default="1.0"> <xs:annotation><xs:documentation>The maximum output level of the layer. Can be an expression.</xs:documentation></xs:annotation></xs:element>