Segno/Coda indexes with enclosed numerals

I came across a succinct notation for indicating the index of segno and coda markers.

https://imgur.com/a/OG3OOD5

With the “Custom text” property and U+2460 to U+2473, you can get pretty close, using Arabic numerals instead of Roman numerals.

Then again, I suppose using this many segno/coda markers is rather uncommon!

Never mind that all three Codas are exactly the same!

Oh would you look at that, they are! I guess their only difference is the jump point, and that the third coda continues to the end. Perhaps this publisher really wanted to save paper, or they wanted to give the reader a jumping exercise!