A calligraphic minuscule "r", known as r rotunda (ꝛ), was used in the sequence "or", bending the shape of the "r" to accommodate the bulge of the "o" (as in "oꝛ" as opposed to "or"). Later, the same variant was also used where "r" followed other lower case letters with a rounded loop towards the right (such as "b, h, p") and to write the geminate "rr" (as "ꝛꝛ"). Use of "r rotunda" was mostly tied to blackletter typefaces, and the glyph fell out of use along with blackletter fonts in English language contexts mostly by the 18th century.