Is it possible to rename a folder in the blender file browser? How about a file?

I recently have been experimenting with user X-27's excellent answer on how to place objects dynamically in the BGE. I have been trying to figure out how to do the same thing, only make it possible to snap the next block to previously added ones as well as the ground. Is there a simple way to do ...

Sadly you can not do this directly, however you can achieve the same result fairly easily. Begin by selecting one longitudinal edge loop, and pressing P > By Selection. Now (in object mode) delete the old mesh. Next select the new edge loop mesh, and press Alt+C > Curve from Mesh/Text. Now you...

I am rendering a scene using cycle and I have set up a background with a "sky texture", now I would like to play around with the height of the horizon. I tried to use a "mapping" node but what it does is changing the background in a solid colour (which varies depending on the Z value). Someone wi...