Writing material

Papyrus (/pəˈpaɪrəs/ pə-PY-rəs) is a material similar to thick paper that was used in ancient times as a writing material. It was made from the pith of the papyrus plant, Cyperus papyrus, a wetland sedge. Papyrus (plural: papyri or papyruses) can also refer to a document written on sheets of such material, joined side by side and rolled up into a scroll, an early form of a book.

Papyrus was first known to have been used in Egypt (at least as far back as the First Dynasty), as the papyrus plant was once abundant across the Nile Delta. It was also used throughout the Mediterranean region. Apart from writing material, ancient Egyptians employed papyrus in the construction of other artifacts, such as reed boats, mats, rope, sandals, and baskets.

Vellum is prepared animal skin or membrane, typically used as writing material. It is often distinguished from parchment, either by being made from calfskin, rather than the skin of other animals or simply by being of a higher quality. Vellum is prepared for writing and printing on single pages, scrolls, and codices (books).

Modern scholars and experts often prefer to use the broader term "membrane", which avoids the need to draw a distinction between vellum and parchment, as it is very hard to determine the type of animal involved, let alone its age, without detailed scientific analysis.

Palm-leaf manuscripts are manuscripts made out of dried palm leaves. Palm leaves were used as writing material in the Indian subcontinent, dating back to as early as the 5th century BCE. Their use began in India and spread to other regions, such as Sri Lanka and Southeast Asia, in the form of dried and smoke-treated Palmyra or talipot palm leaves.Their use continued until the 19th century when the printing press replaced hand-written manuscripts.

One of the oldest surviving complete palm leaf manuscripts is a Sanskrit Shaivism text from the 9th century, discovered in Nepal, and now preserved at the Cambridge University Library. The Spitzer Manuscript is a collection of palm leaf fragments found in Kizil Caves, China. They are dated to around the 2nd century CE and is in Buddhist hybrid Sanskrit.

Parchment is a writing material made from specially prepared untanned skins of animals—primarily sheep, calves and goats. It has been used as a writing medium in West Asia and Europe for more than two millennia. By 400 AD many of the written works intended for preservation in these regions had been transferred from papyrus to parchment. Vellum is a type of fine-quality parchment made from the skins of young animals such as lambs and young calves.The generic term animal membrane is sometimes used by libraries and museums that wish to avoid distinguishing between parchment and vellum.

Strokes (simplified Chinese: 笔画; traditional Chinese: 筆畫; pinyin: bǐhuà) are the smallest structural units making up written Chinese characters. In the act of writing, a stroke is defined as a movement of a writing instrument on a writing material surface, or the trace left on the surface from a discrete application of the writing implement. The modern sense of discretized strokes first came into being with the clerical script during the Han dynasty. In the regular script that emerged during the Tang dynasty—the most recent major style, highly studied for its aesthetics in East Asian calligraphy—individual strokes are discrete and highly regularized. By contrast, the ancient seal script has line terminals within characters that are often unclear, making them non-trivial to count.

Study and classification of strokes is useful for understanding Chinese character calligraphy, ensuring character legibility, identifying fundamental components of radicals, and implementing support for the writing system on computers.