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## Summary * **What is the goal of this PR?** Support for `<sup>` and `<sub>` tags. ## Additional Context This isn't my work, but @jpirnay 's (missing you here, man!). I migrated his work from https://github.com/jpirnay/crosspoint-reader/commit/bcd8c32cf26447ccc792cfedd2fdbfce4fee5210 with some micro-optimizations. Screenshots: [Subscript-and-Superscript-Tests_ch2_p1_10pct_55632.bmp](https://github.com/user-attachments/files/28196936/Subscript-and-Superscript-Tests_ch2_p1_10pct_55632.bmp) [Subscript-and-Superscript-Tests_ch3_p1_21pct_77473.bmp](https://github.com/user-attachments/files/28196937/Subscript-and-Superscript-Tests_ch3_p1_21pct_77473.bmp) --- ### AI Usage While CrossPoint doesn't have restrictions on AI tools in contributing, please be transparent about their usage as it helps set the right context for reviewers. Did you use AI tools to help write this code? _**< YES >**_ --------- Co-authored-by: jpirnay <jens@pirnay.com> Co-authored-by: Julia <julia@uxj.io>
