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: “−” (&amp;minus;) in text, “-” in arguments of templates.

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

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

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 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.

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.

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 w:template:eqm.