The options dialog holds various global options for the K-3D application. You can use the User Interface panel to set K-3D to load a regular K-3D document as template every time you create a new scene.
Figure 3.5. Options User Interface

Start Blackbox Recorder Automatically At Startup: | Toggle if you want the blackbox recorder to log (great when filing bug reports) |
Show Tutorials At Startup: | Toggle if you want the tutorial window to pop up when starting |
Restore Window Size/Position: | Toggle if you want K-3D to remember the placement of windows |
Template Document: | Specify a template document to be used for all new documents |
Preferred Language: | Specify the preferred language that will be used if a translation is aviable |
In the Render Engines you choose what RenderMan compliant renderer you want to use in the RenderManEngine by default. K-3D currently supports Aqsis, BMRT (no longer available), PRMan, NetPRMan, 3Delight, RenderDotC and Pixie; note that Aqsis and Pixie is the only free (as is freedom) renderers.
In the Applications panel you will find options for various external helping applications used by K-3D to process content.