Modeling/Bone-Behaviors.md

@@ -118,6 +118,9 @@ use this behavior. Otherwise, check the [Tail](/Modeling/Bone-Behaviors#tail) be
 As of R4.0.7, segment tag can only be used on cube-less bones. The pivot point of the bone should also be placed at the 
 back. The bones can be further configured by using the [Segment](/Skills/Mechanics/Segment) mechanic.
 
+The `seg_` tag places the segment's pivot at the back of the bone. If you want the pivot at the front instead, use the
+`segf_` tag.
+
 Check out this [segment demo](../Assets/Demo/segment_demo.zip) as reference for how to set up the bones and use the segment
 mechanic.
 
@@ -132,6 +135,9 @@ Otherwise, check the [Segment](/Modeling/Bone-Behaviors#segment) behavior.
 As of R4.0.7, tail tag can only be used on cube-less bones. The pivot point of the bone should also be placed at the
 back. The bones can be further configured by using the [Segment](/Skills/Mechanics/Segment) mechanic.
 
+The `tl_` tag places the tail's pivot at the back of the bone. If you want the pivot at the front instead, use the
+`tlf_` tag.
+
 <br><br>
 
 # Hitbox Tags
@@ -180,3 +186,29 @@ If you need some guide on how to create these bones, check out this [demo player
 | pbody_ | Body        |
 | prleg_ | Right Leg   |
 | plleg_ | Left leg    |
+
+## Custom User Limbs
+
+**Tag: `limb[type=X]`**<br>
+`limb` is a separate, more granular player-limb system. Instead of the six fixed parts above, it renders a single limb
+region of the player skin chosen by the required `type` parameter, which lets you split a model into finer pieces such as
+an upper and lower torso, or upper and lower arms and legs. As with the tags above, any cubes inside the bone are ignored,
+and you apply a skin with the [ModelPlayerSkin](/Skills/Mechanics/ModelPlayerSkin) mechanic.
+
+The available `type` values are:
+
+| Type          | Skin Region     |
+|---------------|-----------------|
+| head          | Head            |
+| chest         | Upper torso     |
+| body          | Lower torso     |
+| right_arm     | Right upper arm |
+| right_forearm | Right lower arm |
+| left_arm      | Left upper arm  |
+| left_forearm  | Left lower arm  |
+| right_leg     | Right upper leg |
+| right_foreleg | Right lower leg |
+| left_leg      | Left upper leg  |
+| left_foreleg  | Left lower leg  |
+
+For example, a bone named `limb[type=right_forearm]_myarm` renders the lower half of the player's right arm.
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