I did some searching but came up empty. Is it possible to select all objects on a page that have the same object style applied?
What I'm looking to do is apply a "fit frame to content" action to a large group of text boxes (labels on a map). But that fitting option didn't seem to be available as part of the object style.
Try using the Text Frame Auto-size option instead within the object style. That feature (found in Object > Text Frame Options) is helpful to autosize captions following certain rules.
That attribute can be used in object styles.
That worked well, thanks! I think then I need two obj styles because I have triangular boxes abutting either end of the text box that point to the location on the map, so when it auto sizes, half of them move away from those triangles.