Thanks for your kind reply.
It's very useful for me to do scaling. But I think the function to display virtual markers and experimental markers together in earlier versions is helpful for us to modify our virtual marker settings.

According to the user's guide, the preview static pose (no marker movement) will display the inverse kinematic solution in a 3D View without any adjustments made to the original model marker locations. However, after selecting this button, I found that my virtual model markers are adjusted to experi...

In the tutorial, it says that when you do scaling, select the "Preview static pose (no marker movement)", then you could find the location of the virtual markers of the model and the experimental makers of your data in the visualizer. After doing this, you can drag the virtual markers to the experim...

The system said:
java.lang.RuntimeException: Error reading MetaData in file 'C:\Users\Documents\OpenSim\4.0\Models\Gait2354_Simbody\newstatic1.trc'. Unexpected key. Expected = NumFrames. Received = NumFrame.
Did anyone get similar problem?