| Link & Other Forms | Only the specific form of link should be tagged. |
| Sheath Attachment | If a sheath is detached or attached. |
| Penis & Penis Outline | Should the post have both penis and penis_outline? This is meant as a tool only for @Donovan_DMC to use, as it involves post sets. |
| Balls & Balls Outline | Should the post have both balls and balls_outline? This is meant as a tool only for @Donovan_DMC to use, as it involves post sets. |
| Diaper Underwear Cleanup | https://e621.net/forum_topics/42062 cleanup |
| Cub Body Types | The body types and genders of cub characters. |
| ABUniverse Designs | The designs of https://us.abuniverse.com |
| Ear Colors | What color(s) are the character's ears? |
It would be helpful to add young_ambiguous to fill the last slot, especially since young characters are more likely to be ambiguous than adults.