TouchDesigner is a hierarchy of components. "Root" is the top-most network in the hierarchy. The Network Path or Path for root is simply /. A typical path is /project1/moviein1.

Normally you work in components under /, like in /project1, but you can put all you want in /.

Root also contains /local, which contains things line MIDI settings, Layout, python modules that are accessible from anywhere, and Variables. /local is saved intact in the .toe file, and is reloaded from the .toe on restart. Parts of /local are controlled via dialogs like the MIDI mapper, but given a lot of /local is text files and tables, most things can be edited manually by the user.

Other things that are commonly put in Root:

  • startup scripts (use Execute DAT)
  • Window Components to manage outputs to monitors
  • Audio Device Out CHOPs to output to audio devices from one place, if that is desired.
  • common libraries, components and scripts that you want to be accessible to all your parts of your project.

Root is actually a Base COMP. See if you can find a way to display its parameter dialog! There are at least two ways.

For this reason, it is better to do most of your work in components like /project1, which makes the component exportable and share-able via RMB->Save Component....

In Root you normally have /perform, which is a Window Component. It is tied to the Window Placement Dialog and is the default Window Component used for Perform Mode.

/ui and /sys are not saved in the .toe. They are reloaded when TouchDesigner starts. You can look inside /ui and /sys, but there is not much use in changing it.