Customizing Nuke with Gizmos - Nuke 101: Professional Compositing and Visual Effects - page 511

You now need to change the expression that places the text.
16. In Text2's Properties panel, click inside the box.x property's Input field and press
= to load the Edit Expression panel.
17. In the expression that's already there, replace Rectangle1 with Rectangle2.
18. Do the same for the box.y expression ( FIGURE 12.27 ) .
Figure 12.27. Changing the expression to link to the other Rectangle node.
You should now have lovely text attached to both your Safe Areas.
19. CleartheProperties Binandthendouble-click NoOp1toloaditsProperties panel
back into the Properties Bin.
20. Play with the two Knobs and see how everything changes in the Viewer. When
you're finished, bring back the values to 5 and 10 ( FIGURE 12.28 ) .
Figure 12.28. Your tree should look something like this at the moment.