User:Incnis Mrsi/UCS map

Mapping of important parts of the Universal Character Set (usually referred to as Unicode) for English Wikipedia.

Arithmetic

Addition: “+”.

Subtraction and opposite/negative: “−” (−) in text, “-” in arguments of templates.

Multiplication: “×” (×), “⋅” (⋅); no substitutes shall be used.

Division: “/” (usually), “ ⁄ ” (virtually unused), “ ∕ ” (sometimes).

Specific symbols

Asterisk

Not a multiplication sign (except in source code in some languages).

Hyphen-minus

Dual use: as a hyphen in the text and minus sign in certain wiki contexts.

Slash

Dual use: as a punctuation and as a #division sign.

Degree sign

“°” is a separate character! Shall never be substituted with “0” or “o” in superscript!

Dashes

Several flavours of, but – is the preferred.

Quotation marks

All but “ " ” and “ ' ” are frowned upon. Also, “ ’ ” is sometimes mistakenly used as a substitute for prime (′) and vice versa.

Junk characters

Standalone “accents”

Both “ ´ ” and “ ` ” are virtually useless without the overstrike feature, but are sometimes mistakenly used instead of quotation marks. Though, “`” is an ASCII character and is actually used in some scripting languages.

Superscripts and fractions

Unicode superscripts and precomposed fractions are generally discouraged. Though, they may be used in edit summaries where text formatting is unavailable.

Ordinal indicators

“º” and “ª” are useless is English language, but the former is sometimes mistakenly used as a substitute for #Degree sign.

Arrows

Left, right, and left–right arrows are very common in Wikipedia. The “⇌” symbols is used for reactions, but is rendered as image instead of the character: see {{eqm}}.