This practice looked somewhat acceptable like The old X fonts encouraged some authors of Unix software andĭocumentation to abuse 0圆0 together with 0x27 as directional Their symmetric shape got priority, except that this had not beenįixed in the X fonts until 2004 (somewhat earlier in the versions that Since 0圆0/0xB4 were defined to be accents by the modern standards, Pairs and have at the same time a different shape for 0x27 and 0xB4. One obviouslyĬannot have both 0x27/0圆0 and 0圆0/0xB4 as mutually symmetric glyph ISO 8859-1, which added a separate acute accent at 0xB4. Should already have been changed when the fonts were extended to cover “apostrophe (closing single quotation mark acute accent)”, but they These shapes were even sanctioned by an early US version of the ISOĦ46 standard (ANSI X3.4, also known as ASCII), which defined 0x27 as Unfortunately, the X Window System fonts contained for a long time

ISO 8859 and Unicode fonts are supposed to show the two accent The twoĪre supposed to represent the neutral (vertical) glyphs commonly Restricted typographic style available to typewriter users. U+201C LEFT DOUBLE QUOTATION MARK U+201D RIGHT DOUBLE QUOTATION MARKĪSCII and ISO 8859 were only designed to support the very U+0060 GRAVE ACCENT U+00B4 ACUTE ACCENT U+2018 LEFT SINGLE QUOTATION MARK U+2019 RIGHT SINGLE QUOTATION MARK this is the preferred character to use for apostrophe Preferred characters in English for paired quotation marks are U+2018 and U+2019 U+0027 APOSTROPHE neutral (vertical) glyph having mixed usage preferred character for apostrophe is U+2019

Preferred characters in English for paired quotation marks are U+201C and U+201D U+0022 QUOTATION MARK neutral (vertical), used as opening or closing quotation mark Standards define the following characters: If you can use UnicodeĬharacters, nice directional quotation marks are available in the form Then use the apostrophe character (0x27) as both the left and right If you can use only ASCII’s typewriter characters, Quotation marks, while most modern systems follow the ISO and Unicode Some old video terminals show ASCII 0圆0/0x27 as left and right Text will otherwise appear rather strange with most modern fonts Summary: Please do not use the ASCII grave accent (0圆0) asĪ left quotation mark together with the ASCII apostrophe (0x27) as theĬorresponding right quotation mark (as in `quote'). ASCII and Unicode quotation marks ASCII and Unicode quotation marks

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