| No. | ICON | Description |
| 1 |  | Show UM-BBD compound page. |
| 2 |  | Show a compound and its KEGG metabolism. |
| 3 |  | Continue prediction using this branch. |
| 4 |  | Next choice is aerobically unlikely. |
| 5 |  | Prune unused branches and display. |
| 6 |  | Show a rule page. |
| 7 |  | Show a super rule that covers multiple simple rules. |
| 8 |  | Aerobically very likely transformation. |
| 9 |  | Aerobically likely transformation. |
| 10 |  | Aerobically neutral transformation. |
| 11 |  | Aerobically unlikely transformation. |
| 12 |  | Aerobically very unlikely transformation. |
| 13 |  | CoA is not shown when present. |
| 14 | | Readily degraded compounds should not be predicted. |
| 15 | | Inorganic compounds should not be predicted. |
| 16 | | High molecular weight compounds should not be predicted. |
| 17 | | Mixtures should not be predicted. |
| 18 | | Highly fluorinated compounds should not be predicted. |
| 19 | | Does not predict the rate of transformations. |
| 20 | | Does not predict phytochemical transformations. |
| 21 | | Does not predict detoxification reactions. |
| 22 | | Does not predict dimerizations. |
| 23 | | Does not predict methylation of hydroxyl groups. |
| 24 | | Does not predict acetylation of primary amines. |
| 25 | | Does not predict formation of intramolecular rings. |
