Context Highlight
Firefox's "Context Highlight" add0on allows you to quickly and easily highlight all instances of a word or phrase within the current page. Simply select the text you want, right click and choose "highlight".
Holding CTRL when clicking "highlight" allows you to highlight new words without automatically clearing the page of highlights first.
Holding CTRL when clicking "highlight" allows you to highlight new words without automatically clearing the page of highlights first.
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