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In the Advanced Aerial Faith Plate room, the commentary node shows you trajectory lines for the Aerial Faith plates and talks about some of the implementation details of them. I was wondering if all of the trajectory visualization data was still present for the rest of the game and if there was a way to turn them on (presumably via the console)?

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The dev commentary implied it was just a debugging tool, so I'm unsure if they left an accessible version in the game. Would be neat if they did, though! – Raven Dreamer♦ Apr 25 '11 at 2:30
I can't imagine that it's inaccessible, all that information is there anyways (though perhaps not rendered for every possible path), 2. using an already developed debugging tool instead of developing one that does the same thing seems like a no brainer, and 3. map makers will certainly want to make use of it when the SDK comes out. – Nick T Apr 25 '11 at 2:55
I did find this list of Console Commands. There's a massive number of commands in there, but if what you're looking for exists, it might be in there. – VOIDHand Apr 25 '11 at 3:53

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In Steam\steamapps\common\portal 2\portal2\maps, you can find the commentary information called sp_a2_trust_fling_commentary.txt which contains these two relevant lines:

"precommands" "developer 1;ent_bbox trigger_catapult"
"postcommands" "ent_bbox trigger_catapult;developer 0"

So, you can run developer 1 to enable developer commands and ent_bbox trigger_catapult to trigger the debugging information for the trigger_catapult entity.

Here is what happens when I do developer 1;ent_bbox trigger_catapult without triggering:

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