"The TRANSREG function does not support a SCORE or STORE statement, but you can use the missing response trick to visualize the spline curve."

Is this to say that the SMOOTH and SSPLINE options are very pretty but can't actually be used for predicting future observations? I tried SPLINE and was able to predict the next observation adding an observation that only contained the dependent variable, and the numbers were different from the last observation with actual data. I changed to SMOOTH or SSPLINE, and the numbers are always the last known values. Any idea if this has been changed in 9.2 or higher? If not, is there a trick to get a value in a dataset rather than just see it on a chart? It would be great to see what the SSPLINE and SMOOTH predict the next observations to be, but I haven't found a PREDICTED option or SCORE option that seems to work with these two options. Thanks in advance for any input...