def import_commands() ->dict:
    """Lists the available sub-commands of the 'chado import' command with corresponding descriptions"""
    return {'essentials':
        'import basic terms into the CHADO database (for setup)',
        'ontology': 'import an ontology into the CHADO database', 'fasta':
        'import sequences from a FASTA file into the CHADO database', 'gff':
        'import genomic data from a GFF3 file into the CHADO database',
        'gaf':
        'import gene annotation data from a GAF file into the CHADO database'}
