You might think em dashes are amazing—but there is something three times better⸻the "three-em dash" (U+2E3B). Why this thing exists, I do not know. Unicode people seem to like making bad decisions, like Han unification and emoji sprawl.
> He lies buried in the corner of his churchyard, in the parish of ⸻, under a plain marble slab
If we were to use three em dashes in a row, the renderer typically puts a 1-2px gap between them. Using U+2E3B leaves no gaps.
Likewise, we use a 2-em dash, U+2E3A, for partially obscured words, for example this line from Gogol's short fiction:
> The town of B⸺ had become very lively since a cavalry regiment had taken up its quarters in it.