I'm hoping there is a way to delete/remove a key that's been set on an attribute in the Attribute Editor.

For example, if I'm on a specific frame and right-click and choose "Set Key" for something like Glow or Incandescence, I cannot find any way afterward to go back and simply remove the key. All I've found is to do a "Break connection"...but that deletes all keys set for that attribute in the entire timeline!

Is there no option to simply go back to the initial frame, select that attribute again, and do a "Delete Key" or something that will remove the setting for that one frame?

(Side question: Is there anywhere that shows what frames have these types of attributes keyed? I know of the Dope Sheet editor...but I don't see these attributes showing up there. )

Thanks,
JTT