DEFAULT_CIRC_SEQS       character vector: strings that are usually
                        circular chromosomes
TranscriptDb-class      TranscriptDb objects
extractTranscriptsFromGenome
                        Tools for extracting transcript sequences
features                Extract simple features from a FeatureDb object
id2name                 Map internal ids to external names for a given
                        feature type
makeFeatureDbFromUCSC   Making a FeatureDb object from annotations
                        available at the UCSC Genome Browser
makeTranscriptDb        Making a TranscriptDb object from user supplied
                        annotations
makeTranscriptDbFromBiomart
                        Making a TranscriptDb object from annotations
                        available on a BioMart database
makeTranscriptDbFromUCSC
                        Making a TranscriptDb object from annotations
                        available at the UCSC Genome Browser
makeTxDbPackage         Making a TranscriptDb packages from annotations
                        available at the UCSC Genome Browser, biomaRt
                        or from another source.
saveFeatures            Methods to save and load the database contents
                        for a Transcript Object.
transcripts             Extract genomic features from an object
transcriptsBy           Extract and group genomic features of a given
                        type
transcriptsByOverlaps   Extract genomic features from an object based
                        on their by genomic location
transcripts_deprecated
                        Functions that compute genomic regions of
                        interest.
