| Aligned | Parent Class of all Modware::Feature::* classes derived from BLAST alignments. |
| CHROMOSOME | Modware representation of a chromosome |
| CONTIG | Modware representation of a contig |
| EST | Modware representation of an EST (aligned) |
| GAP | Modware representation of a GAP |
| GENE | Modware representation of a gene |
| GENERIC | default Modware representation of a simple genome sequence feature (start, stop, strand) |
| MATCH | default Modware representation of an MATCH |
| MRNA | Modware representation of an mRNA |
| NCRNA | Modware representation of an ncRNA (non-coding RNA) |
| REFERENCE_FEATURE | Parent class for all features serving as coordinate system for other features (usually chromosome or contig) |
| Segment | Modware representation of arbitrary segment of some reference feature. |
| TRANSCRIPT | Parent class for all trnascript classes (mRNA, ncRNA, tRNA) |