Represents a derived element of Level element.
Represents a derived element of Level element. Level is the real element which defines the column expression from the dataSet.
Refers a column name in the dataSet.
Refers a column name in the dataSet.
Defines the display column expression.
Defines the display column expression.
A list of attributes defined for this level element.
A list of attributes defined for this level element. Each attribute inside is a string which refers to a dataSet column name.
LevelAttribute
structure.