See: Description
| Class | Description | 
|---|---|
| AdjacentSiblingCombinator | An adjacent sibling combinator selects by checking the widget immediate sibling. | 
| AndCombinator | An 'and' combinator selects the widgets selected by both selectors. | 
| ChildCombinator | A child combinator selects by checking the widget direct hierarchy. | 
| Combinator | A combinator is a selector that aggregates two selectors. | 
| DescendantCombinator | A descendant combinator selects by checking the widget hierarchy. | 
| GeneralSiblingCombinator | A general sibling combinator selects by checking the widget sibling. |