I think that it is the _superscription_ that indicates the fact that it is an abbreviation.
In English “þe" was written “ye” and and “yͤ” “yᵉ” and the last of these might have a dot or a line or a squiggle underneath it, or not, and in no case was that dot or line or squiggle either _meaningful_ or necessary. Michael Everson > On 28 Oct 2018, at 21:43, Piotr Karocki <p...@ieee.org> wrote: > >> The squiggle in your sample, Janusz, does not indicate anything; it is only >> a decoration, and the abbreviation is the same without it. > > I disagreee. This squiggle means "warning, this is abbreviation", and is > present in many abbreviations in many centuries (sometimes, although, > 'abbrev symbol' is rendered differently). So yes, it is important symbol and > shouldn't be lost in transliteration. > > Piotr Karocki
