Hungarumlaut

The double acute accent ( ˝ ) is a diacritic mark of the Latin script. It is used primarily in written Hungarian, and consequently is sometimes referred to as Hungarumlaut, a portmanteau of Hungarian umlaut. The signs formed with diacritic marks are letters in their own right in the Hungarian alphabet (for instance, they are separate letters for the purpose of collation).

interrobang

The interrobang, also known as the interabang, (/ɪnˈtɛrəbæŋ/), ‽ (often represented by ?! or !?), is a nonstandard punctuation mark used in various written languages and intended to combine the functions of the question mark (also called the “interrogative point”) and the exclamation mark or exclamation point (known in printers’ jargon as the “bang”). . The glyph is a superimposition of these two marks. It is present in Unicode as U+203D ‽ interrobang.