If I change an image style, how can I force BackdropCMS to rebuild all of the images in the user interface?

I know that if I delete an image style folder in the files directory that will force all images to be rebuilt. How can I do this without having to delete files in the files directory?

Accepted answer

If you install the Image Effects module and also enable the Image Styles Admin submodule then you get a 'flush' action.  It doesn't force a rebuild but it enables a rebuild to happen as the pages are accessed.

Comments

If you install the Image Effects module and also enable the Image Styles Admin submodule then you get a 'flush' action.  It doesn't force a rebuild but it enables a rebuild to happen as the pages are accessed.

If you install the Image Effects module and also enable the Image Styles Admin submodule then you get a 'flush' action.

I think this might have been what I was looking for. 

In theory, I believe that anytime you update an image style, the images should get rebuilt automatically. But, I know that are situations where this MIGHT not happen. 

When I posted this question, I was having trouble. But, it turns out it was browser caching. When I opened site in a new browser window, the changes to the image style were implemented.