Tampermonkey
The Tampermonkey plugin is available for several broswers, details here https://www.tampermonkey.net/
Step by Step instructions:
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Click the Tampermonkey plugin, select dashboard

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Click on Utilities

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Copy and paste this URL
https://raw.githack.com/timhill-iress/xplanFieldRevealer/master/dist/xplanFieldRevealer.jsinto the URL textbox and click Import
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Click Install

If you’re uncomfortable with the Tampermonkey plugin. See the Bookmarklet instructions.