Welcome to TVPaint Community forums !

This blue square appeared in my project and I don't know what it is, and how I can take it off.
Does anyone know?
Thanks!

This looks like your camera position with Passepartout turned one -- a very convenient asset when animating. Turn off Pass... in the Display Settings panel.

mwebster wrote:This blue square appeared in my project and I don't know what it is, and how I can take it off.
Does anyone know?
Thanks!

As Paul mentioned , you've activated the Camera tool with the 'Passepartout' window . (see the User Manual section 9-13 - through - 9-17 ) .

You can reset the camera parameters and/or turn down the opacity of the 'Passepartout' to 0 (in Display Settings) to get rid of the current window that is superimposed over your scene.
I notice in your screen shot that you are using TVP 10.0.9 , which is several versions ago. You can update to 10.5.7 to take advantage of some new features and improvements.




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