Mmmm... Usually bones and all it's assigned vertices have a total sum/value of 1 (or 100%).
For example:
-Vertex is attached to ONE bone only, so it has 100% value and moves totally 1:1 with it's parent bone.
-Vertex is attached to TWO bones simultaneously (ie it's on a joint/border), so then both vertices have 50% value... if ONE of these bones moves the vertex is moved "half speed" because the other one is stationary bone and limits the movement speed/direction. If both bones were moving to the same direction at the same speed then the vertex would also; otherwise it's somewhere between.
I can't remember what's the maximum number of bones per vertex in Blitz3D, it's at least 2, but might be four. More than that is not needed, if you have more per vertex you're a bad rigger. :)
For example:
-Vertex is attached to ONE bone only, so it has 100% value and moves totally 1:1 with it's parent bone.
-Vertex is attached to TWO bones simultaneously (ie it's on a joint/border), so then both vertices have 50% value... if ONE of these bones moves the vertex is moved "half speed" because the other one is stationary bone and limits the movement speed/direction. If both bones were moving to the same direction at the same speed then the vertex would also; otherwise it's somewhere between.
I can't remember what's the maximum number of bones per vertex in Blitz3D, it's at least 2, but might be four. More than that is not needed, if you have more per vertex you're a bad rigger. :)