Each file contains functional annnotations of genes for all contigs from a metagenome. The file is tab-delimited file with the columns
1. contig
2. start
3. stop
4. direction
5. annotation : The unique ID of the annotation, e.g. 'COG5433', 'PF01609.21', and 'mmseqs_20_10505236'
6. annotation_source : The source for this annoation. Possible values are either COG_2014_FUNCTION, Pfam_v32, or mmseqs
7. annotation_description : The description of this function from the COGs or Pfam database. If it is a mmseqs family, then there is no description.

Columns 1-4 define the gene that is being referenced, and they are the same as in the corresponding gene calls files.