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.
Nuqta
Nuqtā (Hindi-Urdu नुक़्ता, نقطہ, from Arabic "nuqta" نقطة "dot," or "period."), also spelled Nuktā, is a term for a diacritic mark that was introduced in Devanāgari and some other Indian scripts to represent sounds not present in the original scripts. It takes the form of a dot placed below a character. Also, in another sense deriving from the Arabic script itself, there "are some letters in Urdu that share the same basic shape but differ in the placement of dots(s) or nuqta(s)" in the Urdu script: the letter ع "ain", with the addition of a nuqta, becomes the letter غ g͟hain.