List of useful HTML unix codes

Context

Frequently looking up codes for popular writing signs like — (—) and – (–)

Objective

Have a local reference to eventually remember by making sense of their naming. Like the use of & and ; at the beginning/end of each code.

Arrows

up arrow (↑) — ↑
down arrow (↓) — ↓
left arrow (←) — ←
right arrow (→) — →
double headed arrow (↔) — ↔

Spacing

non breaking space (invisible – keeps words together; no line break) —  

Quotation marks

left double quotation mark (“) — “
right double quotation mark (”) — ”

Common symbols

copyright sign (©) — ©
registered sign (®) — ®
trademark sign (™) — ™
degree sign (°) — °
plus/minus (±) ±
times (×) — ×
divide (÷) — ÷
fractions (¼), (½), (¾) — ¼, ½, ¾