In most cases a characters posture can be tagged. I've included common options here, but there are edge cases not included here and more-detailed tags in the tag-group poses. These tags are not always mutually exclusive and in some cases, like close ups, none may apply.

Tag Options:

1. Standing A character upright and supported by their legs and feet
2. Sitting A character supported by the buttocks or thighs where the torso is more or less upright.
3. Reclining: A person who is sitting but lounging backwards, often supported by their arms or a raised surface.
4. Kneeling When a character's knees touch the ground or other surface beneath them.
5. Crouching Resting only on the feet with bent knees.
6. Straddling To stand or sit with a leg on each side of something. Especially useful in cases like cowgirl_position where kneeling/sitting/crouching is unclear.
7. Lying When a character is more or less horizontal and supported along its length by the surface underneath.
8. Leaning Forward When a character bends forward at their waist, but not so far as to make a 90 degree angle.
9. Bent Over When a character is leaning over at a right angle with their back bent and legs roughly straight.
10. All Fours When a bipedal character (not characters who normally stand on four legs) has both sets of limbs resting against the ground.