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20-20-20 Rule version history - 1 version

20-20-20 Rule by Shreya

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20-20-20 Rule version history - 1 version

  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 1.0

    Released Oct 27, 2021 - 26.92 KB
    Works with firefox 55.0a2 and later

    Source code released under Mozilla Public License 2.0

    You'll need Firefox to use this extension
    Download Firefox and get the extension
    Download file