 Note that for each species, there must be one co-ordinate system that has the attribute "top_level" and one that has the attribute "sequence_level".
 
 @column coord_system_id      Primary key, internal identifier.
-@column species_id           Indentifies the species for multi-species databases.       
-@column name                 Co-oridinate system name, e.g. 'chromosome', 'contig', 'scaffold' etc.     
-@column version              Assembly.    
-@column rank                 Co-oridinate system rank.   
-@column attrib               Co-oridinate system attrib (e.g. "top_level", "sequence_level").     
+@column species_id           Indentifies the species for multi-species databases.
+@column name                 Co-oridinate system name, e.g. 'chromosome', 'contig', 'scaffold' etc.
+@column version              Assembly.
+@column rank                 Co-oridinate system rank.
+@column attrib               Co-oridinate system attrib (e.g. "top_level", "sequence_level").
 
 @see seq_region
 @see meta_coord

@column score                       Alignment score.
@column evalue                      Alignment e-value.
@column perc_ident                  Alignment percentage identity.
@column cigar_line                  Used to encode gapped alignments. 
@column external_db_id              Foreign key references to the @link external_db table.
@column hcoverage                   

@see cigar_line


@desc Relates operon IDs in this release to release-independent stable identifiers.

@column operon_id    	    Primary key, internal identifier. Foreign key references to the @link operon table.
@column stable_id           Stable identifier.
@column version             Version number.
@column created_date        Date created.
@column modified_date       Date modified.

@see operon

