My technical know-how unfortunately does not extend to screenshots yet… But have a look at f.ex. the continuo part of Leclair’s 1.Recreation
http://ks4.imslp.info/files/imglnks/usimg/b/bb/IMSLP165467-PMLP295314-basso_continuo,_facsimile.pdf
which among other goodies uses a profusion of “dashed” figures. (Nice, by the way, how Figurato enables lines to be drawn, when a figure extends over several bass-notes, by using a hard return + Space).
In modern editions, these are mostly transcribed as an normal oblique dash “/” superimposed on the unmodified number (or the other way around).
So: / and 5 simultaneously.
Yeah, I can imagine the input challenges! At the moment using “/” and “+” after 5 or 6 gives the same result. I don’t remember seeing “-” ever, so I think we can put that one to rest…
No haste at all! But it would be very welcome if this would one day become possible.
Liebe Grüsse,
Lars Ulrik