Final Cut Pro 10.5.3 (released June 2021) does not include a "paper" feature or white paper by that name. Instead, "paper" in this context typically refers to used to give videos a scrapbook or vintage aesthetic . Paper Effects and Transitions
You can achieve "paper" looks in Final Cut Pro using these methods: Final Cut Pro 10.5.3
: A professional toolset specifically for Final Cut Pro that includes paper frames, strobing overlays, torn paper effects, and vintage paper textures. Final Cut Pro 10
These tutorials demonstrate how to apply and customize paper-style graphics and transitions in Final Cut Pro: torn paper effects
: Ability to sort clips by type, including proxy, optimized, or missing media.