POV-Ray : Documentation : Reload Tool Menu
  POV-Ray 3.6 Documentation Online View Syntax Coloring Edit PVTOOLS.INI Reload Tool Menu

If you want your changes to take immediate effect after you have edited PVTOOLS.INI using a text editor, you have to select the Tools Menu command Reload Tool Menu to instruct POV-Ray for Windows to re-read the INI file and activate the new settings. Syntax Coloring Edit PVTOOLS.INI

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