After you have animated the biped with footsteps, you can save the data in either a BIP file or an STP file.
- A BIP file saves both the footsteps and any animation on the upper body. You can save the entire footstep sequence, or just a portion of it.
- An STP file saves just the footstep data. These files, in ASCII format, are sometimes used by game developers to save just the leg and foot motion data
To save a either type of file, click 
(Save File) on the Biped rollout. Choose the desired file type from the Save as type pulldown.
For more detailed information on these file formats and how to work with them, see Loading and Saving BIP Animation and Loading and Saving STP Files.