Downloaded from the original Reddit thread:

https://www.reddit.com/r/emulation/comments/bhskjr/hd_mode_7_mod_beta_4_bsnes_1073_widescreen/

DerKoun writes:

> New in this version:
>
>   - Widescreen: Setting to expand Mode 7 backgrounds to the left and right for
>     a 16:9 aspect ratio.
>
>   - Tweaked the behavior of Output/Center to drop the top and bottom 4
>     scanlines in 1080p fullscreen. This bumps the scaling form 4x to 5x and
>     with widescreen allows native 1080p fullscreen Mode 7 with uniformly
>     scaled sprites.
>
>   - Replaced magic numbers with preliminary detection for values at the edges
>     that break perspective correction. Fixes Tales of Phantasia (and should
>     not break Super Mario Kart).
>
>   - Disabled the automatic switching to non-scaled when there is no Mode 7
>     background, as it breaks with widescreen. [may also help with some
>     shaders, IIRC someone asked for this]