| Package | Description | 
|---|---|
| org.biojava.bio.seq.impl | Standard in-memory implementations of  SequenceandFeature. | 
| org.biojava.bio.seq.projection | Code for projecting Feature objects and systematically altering their
properties. | 
| Class and Description | 
|---|
| ProjectedFeatureHolder Helper class for projecting Feature objects into an alternative
 coordinate system. | 
| ProjectionContext Interface that defines the projection between original features and
 projected features. | 
| ReparentContext A good base class to implement ProjectionContext from. | 
| Class and Description | 
|---|
| Projection Interface implemented by all projected feature objects. | 
| ProjectionContext Interface that defines the projection between original features and
 projected features. | 
| ProjectionEngine Factory for proxy objects which project BioJava features
 into alternate coordinate systems. | 
| ReparentContext A good base class to implement ProjectionContext from. | 
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