GB/T 15834-2011 Part 5: Positioning of Punctuation Mark
GB/T 15834—2011 出版物上数字的用法（General Rules for Writing numberals in Public Text ）
本文部分翻译了国标GB/T 15834-2011中关于标点符号位置的内容。该国标的中文全文，可以在互联网上找到。
5. Positioning of Punctuation Mark.
5.1 Positioning of Punctuation Mark in Horizontal Writing Mode
5.1.1 Full stops(U+3002), commas(U+FF0C), ideographic commas(U+3001), semicolons(U+FF1B), colons(U+FF1A) should all be after the corresponding text, and carry one em space. They should be placed in the lower left corner, and could not be the start of a line.
5.1.2 Question marks(U+FF1F), exclamation marks(U+FF01) should all be after the corresponding text, and carry one em space. They should be placed in the left side, and could not be the start of a line. When two question marks(or exclamation marks) are used together, they should only carry one em space; when three question marks(or exclamation marks) are used together, they should only carry two em space; when one question mark and exclamation mark are used together, they should only carry one em space.
5.1.3 Left quotation marks(U+2018, U+201C), left brackets(U+FF08, U+3014, U+3010), left double angle brackets(U+300A), and left angle brackets(U+3008) should be placed on the left side of the relative characters and could not be the end of a line, while right quotation marks(U+2019, U+201D), right brackets(U+FF09, U+3015, U+3011), right double angle brackets(U+300B), and left angle brackets(U+3009) should be placed on the right side of the relative characters and could not be the start of a line. Each of these marks should carry one em space.
5.1.4 A double dash(U+2014) is between the two corresponding words, and carry two em space. It should be aligned to the vertical center of the corresponding base character, could not be separated into 2 parts nor to be the start and the end of a line at the same time（原文是“不能中间断开分处上行之末和下行之首”）.
5.1.5 A double ellipsis(U+2026) should carry two em space. When 2 double ellipsis are used together, they should carry 4 em space and make a independent line. A double ellipsis could not be separated into 2 parts nor to be the start and the end of a line at the same time.
5.1.6 The en dash of hyphens(U+2013) is a little shorter than the Chinese character "one" and should carry half an em space; the dash of the hyphens(U+2010) is a little longer than the Chinese character "one" and should carry one em space; the wave dash(U+301C) of the hyphens should carry one em space. All of the hyphens should be aligned to the vertical center of the corresponding base character and should not be the start of a line.
5.1.7 Interpuncts(U+00B7) are between the two corresponding words and carry half an em space. They should be aligned to the vertical center of the corresponding base character and should not be the start of a line.
5.1.8 Emphasis dots and proper marks(underline) should be underneath the characters.
5.1.9 Slash marks(U+002F) carry half an em space and could not be the start not the end of a line.
5.1.10 When a punctuation mark is at the end of the line, to beautify the whole composition, even if it's a full-width character, it should carry the same em space of a half-width character.
5.1.11 In the practice of composition, for a better composition or reading experience, or to avoid the line-breaking of the last character of a bottom paragraph or a new page cause by the last character(which will result in a wasteful and ugly layout), we could reasonably reduce the space of the punctuation mark.
5.2 Positioning of Punctuation Mark in Vertical Writing Mode
5.2.1 Full stops(U+FE12), commas(U+FE10), question marks(U+FE16), exclamation marks(U+FE15), ideographic commas(U+FE11), semicolons(U+FE14), colons(U+FE13) should all be placed in right corner under the corresponding text.
5.2.2 Double dashs(U+2014), double ellipsis(U+2026), interpuncts(U+00B7), slash marks(U+002F) and hyphens should be placed in the middle under the corresponding text, in a vertical writing mode;
5.2.3 Quotation marks(U+FE41, U+FE42, U+FE43, U+FE44) and brackets(U+FE35, U+FE36, U+FE37, U+FE38, U+FE39, U+3A) should be up or down the corresponding text.
5.2.4 Presentation form for vertical wavy low lines(U+FE34) should be on the left side of the the corresponding text.
5.2.5 Sesame dots(U+FE51) should be on the right side while the presentation form for vertical low lines(U+FE33) should be on the left side of the corresponding text.
5.2.6 The rules about whether a certain punctuation mark could be the start or the end of a line in Horizontal Writing Mode are also required in Vertical Writing Mode.
此外，还有相关的GB/T 15835—2011
5.1.7 Line-breaking
An Arabic number in Chinese should stay in one line and never be broken.
[1] CJK标点符号 http://www.unicode.org/charts/PDF/U3000.pdf
[2] 中文竖排标点 http://www.unicode.org/charts/PDF/UFE10.pdf
[3] CJK兼容符号（竖排变体、下划线、顿号）http://www.unicode.org/charts/PDF/UFE30.pdf
感谢Xiaoqian Wu提供翻译文字。
