Infrared goggles lack Z level markers

[Funguss]

When using infrared goggles and standing on a roof you may be forgiven for thinking there's no heat signatures below you. They're not represented on the tiles above like other contacts are.

Describe the solution you'd like

In keeping with current glyph usage a red '˅' on above levels would be helpful.

Describe alternatives you've considered

I honestly can't think of another solution, let alone a better one. I'm all ears, though!

[stale]

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[stale]

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