[Question] BitMap (photo) Objects: auto update all occurances on same page

[jclements]

In the Introduction movie (which uses the Introduction template) they demo how replacing the bitmap fill with another bitmap from the BitMap (or Fill) Gallery automatically updates all instance of that fill in objects used on the same page.

I looked in Help but did not see any reference about this.

1- I understand how to do it, but HOW DOES IT DO IT and why couldn't something similar be done with vector objects so we'd basically have a 'sprite' /'component'/'symbols' (extremely useful when drawing diagrams with repeating graphical elements)?

2- What if there are two or more instances of objects with the same bitmap fill on the same page and you want to only update ONE of those with different bitmap fill? Is a there special key-combo to use when dragging from the Gallery onto the fill . . . or some other method?

JC