LSL:PrimitiveParams
From OpenSimulator
Here's some data to give you an idea of how 'taper' converts into PathScale for a 'box'
| SL Client Edit UI Value | LSL PrimitiveParams top_size | PathScale | 
|---|---|---|
| -1 | 2 | 0 | 
| -0,75 | 1,75 | 25 | 
| -0,25 | 1,25 | 75 | 
| 0 | 1 | 100 | 
| 0,75 | 0,25 | 175 | 
| 1 | 0 | 200 | 
(basically, PathScale is ((2-lsl) * 100)