The interrogation mark which accentuated this "well" signified: "it seems to me that one may remain concealed here?"
It's headed, 'A New Cult,' with an interrogation mark after it.
The very sickle-shape of the plasmodium turned itself into an interrogation mark.
An interrogation mark always seems to me most satisfactory—as delightful as the after-theater supper for which somebody else pays.
In the Folios the interrogation mark and the exclamation mark are often interchanged.
A punctuation mark (?) that follows a direct question: “Is Ralph really seven feet tall?”