Text Editor
Set the default editor for opening ASCII RIB files.
Enable Solo
Allows soloing selected nodes in the Node Editor as you would in the Hypershade by selecting the solo button.
Solo Key
Chooses a "hotkey" to solo a node, defaults to backtick key.
Attributes in Channel box
Toggle whether or not the channel box displays RenderMan controls.
Font Size
Change the size of displayed fonts.
Font (Typeface)
Change the font used in the editor.
Tab Width
When pressing Tab, move this many spaces in the editor.