In Southeast Asia, in the first millennium, documents of sufficiently great importance were inscribed on soft metallic sheets such as copperplate, softened by refiner's fire and inscribed with a metal stylus. In the Philippines, for example, as early as 900AD, specimen documents were not inscribed by stylus, but were punched much like the style of today's dot-matrix printers. This type of document was rare compared to the usual leaves and bamboo staves that were inscribed. However, neither the leaves nor paper were as durable as the metal document in the hot, humid climate. In Burma, the kammavaca, Buddhist manuscripts, were inscribed on brass, copper or ivory sheets, and even on discarded monk robes folded and lacquered. In Italy some important Etruscan texts were similarly inscribed on thin gold plates: similar sheets have been discovered in Bulgaria. Technically, these are all inscriptions rather than manuscripts.