| AbstractAssignmentContainerElement | Represents a node in a tree-like data structure. |
| AbstractMarkupElement | Represents a node in a tree-like data structure. |
| AbstractValueElement | Represents a node in a tree-like data structure. |
| AnonymousBlockElement | Represents a node in a tree-like data structure. |
| AssignmentElement | Represents a node in a tree-like data structure. |
| AttributeElement | Represents a node in a tree-like data structure. |
| CodeElement | Represents a node in a tree-like data structure. |
| CommentElement | Represents a node in a tree-like data structure. |
| DoctypeElement | Represents a node in a tree-like data structure. |
| DocumentElement | Represents a node in a tree-like data structure. |
| ExpressionElement | Represents a node in a tree-like data structure. |
| KeywordElement | Represents a node in a tree-like data structure. |
| MarkupElement | Represents a node in a tree-like data structure. |
| MixinCallElement | Represents a node in a tree-like data structure. |
| MixinElement | Represents a node in a tree-like data structure. |
| TextElement | Represents a node in a tree-like data structure. |
| VariableElement | Represents a node in a tree-like data structure. |