specific names of the siglum used on SH

[-JKP-]

Names of the scribal sigla that were in use by medieval scribes are often referred to as glyphs, marks or
Tironian notes, which is a general term and does not refer to a specific symbol.

So there are for example: the breves (ĕ), acutes (ó), apices (u᷄), the thorn, the rotunda, ampersand, etc,



But what is the name referring to the curl that is used on the CH to become SH?

If there is no name, can we agree on a name for it?

If it were Latin, it would be a macron. Sometimes they are straight, sometimes curved, but the meaning was usually the same EXCEPT, that some scribes used the straight macron mostly for "m" (sometimes "n") and reserved the curved one (or the smoke-shaped one) for er/re/ir/ri, as in v'sus (versus). It's like an apostrophe except that we use one and they had a bunch of them.