An example:
Left is just a snapshot of a church om a gray dark day against the relatively bright sky.
Right is the same picture after the filter is applied. No other corrections are made.
I just kept pressing Random to see if I can get something of it with this filter. A sepia colored image was looking interesting.
The Glow intensity and the glow presence are not only creating the glow, but also lighten the whole picture, so I raised the glow intensity to 90 and presence to 60.
Finally applied the filtered image on the original in a screen mode.
The result is an old looking picture of the same church with a mysterious vibe because of the glow.