In the 1580s, English printer Henry Denham invented a "rhetorical question mark" for use at the end of a rhetorical question; however, it died out of use in the 17th century.
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The percontation point (⸮), a reversed question mark later referred to as a rhetorical question mark, was proposed by Henry Denham in the 1580s and was used at the end of a question that does not require an answer—a rhetorical question.
For example, while he is the usual question-marking enclitic, huŋwó is used for rhetorical questions or in formal oratory, and the dubitative wa functions somewhat like a tag question in English (Rood and Taylor 1996; Buchel 1983).
The rhetorical question mark or percontation point was invented by Henry Denham in the 1580s and was used at the end of a rhetorical question; however, its use died out in the 17th century.
In his CERN presentation, Murray-Rust stated that the WWMM was a "response to the expense of scientific journals," and he asked the rhetorical question, "Can we win the war to make data open, or will it be absorbed into the publishing and pseudo-publishing world?"