Can I edit a text object while rendering? I am rendering a text for an intro right now, I am on the 210th frame, is it possible to still edit the text without messing the rendering up or not?
It is possible to continue working on your scene while rendering, you just need to click on the image icon in the bottom left corner of the render screen.



Click on 3D View from the menu to continue editing your scene while the animation renders in the background.



For the changes you make on your scene to take effect in the final render, you are going to have to re-render your animation.