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List of environment variables supported by Firefox?

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I search but did not find any list of environment variables supported by Firefox. Is there such an official list, perhaps groupped by Firefox version, published somewhere?

I search but did not find any list of environment variables supported by Firefox. Is there such an official list, perhaps groupped by Firefox version, published somewhere?

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SuMo Bot
SuMo Bot

Here's what my search found. https://www.google.com/search?q=List+of+environment+variables+supported+by+Firefox&sei=IKkWaZe-J_yg5NoPhtiOuA4

https://developer.mozilla.org/en-US/docs/Web/CSS/Guides/Environment_variables