How to transform object by clicking instead of dragging the four corner

<http://www.deviantart.com/deviation/41421008/>

I was trying to follow the tutorial above but I'm having some problem. In the video, you could see the author imply skew or transform the object just by clicking. How does he do that?

I only know how to transform by dragging the four corners or keying the value. Is that any script install?

Hope someone could help me, Thanks.

If you right-click inside the transform box then choose "Warp", you have almost a free hand in transforming the image.

I don't really know how to describe in words, but is shown in the video.

Simply by clicking one point and the image will skew according to the cursor coordinate.

I haven't DLed the vid, but holding CTRL down whilst grabbing a corner will just distort that corner; edges will skew.

Play around with the CTRL, ALT and SHIFT buttons (and combinations thereof), they have options for many of the tools in PS.

He says something about "Using the combination keys", but he doesn't say which.

Thanks, but I have already try the CTRL, ALT and SHIFT key combination before posting for help. =)

Just a guess, but maybe he just used a bunch of still screen captures, with just the cursor animated in Flash. The cursor stays that non-standard green round thing, no matter which tool he seems to be using, which makes me think it's not the "Real" cursor.