Customizing Nuke with Gizmos - Nuke 101: Professional Compositing and Visual Effects - page 497

The next two properties are R and T, which stand for right and top . Here you
would like the same distances, just from the right edge and the top edge. You
simply need to subtract the results in X and Y from the width and height of the
image, respectively.
10. In the R expression field enter width-width*5/100 .
11. In the T expression field enter height-height*5/100 ( FIGURE 12.6 ).
Figure 12.6. All the expressions and their results.
12. Click OK.
13. Hover your mouse pointer over the Viewer and press O on your keyboard to tem-
porarilyremovetheon-screencontrols(alsocalled overlays ,hencetheOhotkey)
so you can see the change in the Rectangle ( FIGURE 12.7 ) .
Figure 12.7. The new Rectangle1 should look like this now.
Great. So you now have a line shaped like a box all around the edges of your
frame, 5% from the edge. What if you want it to be 7% from the edge? You have