POV-Ray : Documentation : 5.3.4 Interrupting POV-Ray
  POV-Ray 3.6 Documentation Online View Output file formats   5.3.5 Tutorials

5.3.4 Interrupting POV-Ray

To interrupt a rendering in progress, you can use CTRL-C (SIGINT), which will allow POV-Ray to finish writing out any rendered data before it quits. When graphics display mode is used, you can also press the 'q' or 'Q' keys in the rendering preview window to interrupt the trace if the Test_Abort (or +X) flag is set. Output file formats   5.3.5 Tutorials

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