A summary of TouchDesigner's Defaults.
Startup script and .toe file
When opening a new (empty) session in Touch, a setup.cmd script is run at startup which loads a default setup.toe file. Both the setup.cmd and setup.toe files are located in $TFS/touch/Setup.
The default geometry files used when creating a new Camera, Light, Bone, or Null component are located in $TFS/touch/Geo.
The default Timeline settings are: Start Frame = 1 / End Frame = 5000 / FPS = 60