Question mark
In the early 13th century, when the growth of communities of scholars (universities) in Paris and other major cities led to an expansion and streamlining of the book-production trade, punctuation was rationalized by assigning Alcuin's stroke-over-dot specifically to interrogatives; by this time the stroke was more sharply curved and can easily be recognized as the modern question mark.
Naming conventions of the International Phonetic Alphabet
The is usually called by the sound it represents, "glottal stop". This is not normally a problem, because this symbol is seldom used to represent anything else. However, to specify the symbol itself, it is sometimes called a "gelded question mark". This latter name is derived from its original form as a dotless question mark in a fashion reminiscent of gelding.