What does the "Enable Glow Effect" checkbox do?

Question

I'm about to render a replay, and amongst the advanced options in the modal dialog there is a checkbox to "Enable Glow Effect".

What is this, and what effects will it have on my replay if I enable it?

Answer 1

There are 3 glow effects in the game.

1. As a demoman, any stickybombs you place glow.
2. In Payload maps, the bomb cart glows.
3. In CTF maps, the intelligence briefcases glow.

Glows are visible through walls.

I assume that enabling this (it's disabled by default) will show any glows you would normally see.

It's not useful most of the time, unless you were recording a replay of a demoman life.