manner as a . The lack of extensive knowledge on historical use of the runes has not stopped modern authors from extrapolating entire systems of divination from what few specifics exist, usually loosely based on the reconstructed names of the runes and additional outside influence. A recent study of runic magic suggests that runes were used to create magical objects such as amulets, but not in a way that would indicate that runic writing was any more inherently magical, than were other writing systems such as Latin or Greek. Medieval use As Proto-Germanic evolved into its later language groups, the words assigned to the runes and the sounds represented by the runes themselves began to diverge somewhat and each culture would create new runes, rename or rearrange its rune names slightly, or stop using obsolete runes completely, to accommodate these changes. Thus, the Anglo-Saxon futhorc has several runes peculiar to itself to represent diphthongs unique to (or at least prevalent in) the Anglo-Saxon dialect. Some later runic finds are on monuments (runestones), which often contain solemn inscriptions about people who died or performed great deeds. For a long time it was presumed that this kind of grand inscription was the primary use of runes, and that their use was associated with a certain societal class of rune carvers. In the mid-1950s, however, approximately 670 inscriptions, known as the Bryggen inscriptions, were found in Bergen. These inscriptions were made on wood and bone, often in the shape of sticks of various sizes, and contained inscriptions of an everyday nature—ranging from name tags, prayers (often in Latin), personal messages, business letters, and expressions of affection, to bawdy phrases of a profane and sometimes even of a vulgar nature. Following this find, it is nowadays commonly presumed that, at least in late use, Runic was a widespread and common writing system. In the later Middle Ages, runes also were used in the clog almanacs (sometimes called Runic staff, Prim, or Scandinavian calendar) of Sweden and Estonia. The authenticity of some monuments bearing Runic inscriptions found in Northern America is disputed; most of them have been dated to modern times. Runes in Eddic poetry In Norse mythology, the runic alphabet is attested to a divine origin (). This is attested as early as on the Noleby Runestone from that reads , meaning "I prepare the suitable divine rune..." and in an attestation from the