Hello, can we add PDF highlight memory mode?

Hello, can we add PDF highlight memory mode?
For example, if a paragraph is highlighted, there can be a function key that hides the text and only displays the highlighted color. The text only appears when the mouse is placed or clicked.
Memory mode similar to MarginNote

I tried Zotero plugin template but couldn't find any API related to highlighting PDF comments
I hope to add this feature for memory purposes
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