| Interface | Description | 
|---|---|
| IComment | 
 Represents a comment. 
 | 
| IHiddenRegion | |
| IHiddenRegionPart | 
 Super-Interface for  
IWhitespace and IComment. | 
| ISemanticRegion | |
| ISequentialRegion | 
 Super-Interface for  
IHiddenRegion and ISemanticRegion. | 
| ITextRegionAccess | 
 This class provides access to text regions ( 
ITextSegments) based on the semantic model. | 
| IWhitespace | 
 Represents a whitespace token inside a  
IHiddenRegion. |