Adobe After Effects User Manual
Page 114

Note:
use either horizontal or vertical FilmFit, not fill.
After Effects can read Maya locator nodes, which enable you to track objects from the Maya scene as it is translated into After Effects. After
Effects creates a null layer and applies the relevant transformations to it if the name of a Maya locator node contains the word Null, NULL, or null.
Avoid parenting locator nodes to each other in Maya; instead, parent the locator nodes to geometry.
After Effects doesn’t read World or Underworld coordinates in the LocatorShape. Use a transform node to place them.
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