    How to create gcad3d-tutorial-videos

    Prerequisites:
    - install gtk-recordmydesktop

    Start gcad
      - activate Options / ScreenCast ON

    Start gtk-recordmydesktop
      - audio off;
      - select the window you want to record
      - start recording
      - stop (select the icon (red square) on top
      - wait for the output file out.ogv, save.

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