evenly spaced. Log-log ruled paper is similar to semi-log ruled except that both the horizontal and vertical lines are spaced logarithmically. Manuscript paper is used for handwriting music. The most basic page is laid out with a series of five-line staves, each spanning the width of the page. Any musical notation (clefs, bars, notes, etc.) may be written in as desired by the artist. As notebook paper is to the written word, music manuscript paper is to the written score. Regional standards Regional standards exist for ruling layouts, particularly for academic or government clerical purposes. China Elementary students use (田字格) Tianzige ruled paper, featuring boxes for individual characters. Sometimes each box is subdivided (vertically, horizontally, diagonally) as reference to aid the writer with the relative proportion and placement of character components. In Taiwan, the Japanese genkō yōshi is the main form of rule used by students writing in Mandarin, where it is called 原稿紙 (). Students use the thin vertical column to transcribe Bopomofo pronunciation. France In order to foster handwriting discipline, a type of ruling known as Seyès ruling is used on paper in schools. Heavy vertical lines are spaced 8 mm (appx. 5/16 in) apart, beginning 16 mm (appx. 5/8 in) from the left-hand edge of the page. Three lighter lines are spaced 2 mm (appx. 5/64 in) apart between each pair of heavy lines. These sheets of paper are generally known as grands carreaux (large tiles) as opposed to the petits carreaux (small tiles) which are 5x5mm. Seyès ruled paper is available in single sheets (copies simples) or joined double sheets (copies doubles) which are sometimes preferred for exams, being easier to handle (a signle sheet can not be lost, they might be used as a portfolio to store more sheets, etc). Seyès ruled paper is available in A4 size (grand format) and in the very school specific 170 × 220 mm format (petit format). Germany DIN 16552:1977-04 ("Lines for handwriting") specifies the types of ruled paper to be used by school pupils. India Ruled paper exercise notebooks is available in a variety of semi-standardized formats: Double ruled paper commonly two rules in 15 mm spacing Four ruled paper similar to Handwriting Paper Single ruled paper commonly 8 mm Squared maths paper with blocks of 5 mm² Japan Among others, genkō yōshi (原稿用紙, "manuscript paper") is a kind of paper mainly used for kanji script writing, formed