There's also the venerable U+0003 "end of text". It has the virtue (?) of having no associated glyph and so can be realized however one likes.
On Thu, Jan 24, 2013 at 4:41 PM, Richard Wordingham < richard.wording...@ntlworld.com> wrote: > On Thu, 24 Jan 2013 20:05:41 -0300 > Andrés Sanhueza <peroyomasli...@gmail.com> wrote: > > > Do you think that a "end of story" symbol may be feasible/useful? > > One such symbol is already encoded, the Halmos tombstone U+220E END OF > PROOF. I'm not sure that it should have general class Sm instead of > Po - Paul Halmos himself wrote of the symbol, > > "The symbol is definitely not my invention — it appeared in popular > magazines (not mathematical ones) before I adopted it, but, once again, > I seem to have introduced it into mathematics. It is the symbol that > sometimes looks like ▯, and is used to indicate an end, usually the end > of a proof. It is most frequently called the 'tombstone', but at least > one generous author referred to it as the ‘halmos’." > > There are several other such characters already, such as U+0E5B THAI > CHARACTER KHOMUT and U+17DA KHMER SIGN KOOMUUT. > > Richard. > > >