-*- coding: utf-8 -*-
Greek ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ
Greek αβγδεζηθικλμνξοπρςτυφχψω

math operators ⌈⌉ ⌊⌋ ∏ ∑ ∫ × ⊕ ⊖ ⊗ ⊘ ⊙ ⊚ ⊛ ∙ ∘ ′ ″ ‴ ∼ ∂ √ ≔ × ² ³
math constants π ℵ ∞
math misc ± ∎ 
Geometry ⌅⌆ℓ∟∠∡∢∥∦∶∷
Logic & Set Theory ∀¬∧∨∃⊦∵∴∅∈∉⊂⊃⊆⊇⊄⋂⋃
Relations ≠≤≥≮≯≫≪≈≡
Sets ℕℤℚℝℂ
Arrows ←→↑↓ ↔ ↖↗↙↘  ⇐⇑⇓⇒ ⇔⇗ ◀▶▲▼ ◁▷△▽ ↤↦↥↧ ↞↠↟↡ ⇤⇥ ⇞⇟ ↺↻ ↶↷⇄↵↩ ☞☜☝☟

Matching Pairs «» ‹› “” ‘’ 〖〗【】「」『』〈〉《》〔〕
currency ¢ € ₠ £ ¥
common symbols ° © ® ™ § ¶ † ‡ ※
Bullet-like •◦ ‣ ✓ ●■◆○□◇ ★☆ ♠♣♥♦ ♤♧♡♢ ＊
stars ✦✸✷✶

phonetic symbols ᴁᴂᴈ
Music Symbols ♩♪♫♬♭♮♯
digits ➀➁➂➃➄➅➆➇➈➉
Cultural Symbols 卐卍✝✚✡⎈☭☪☥☮☺☹♨
Taoism ☯☰☱☲☳☴☵☶☷
Industrial Symbols ☠☢☣☤♲♳
Early Astronomy ☉☼☾☿♁♄♅♆♇☄
Computing ⌽⌘⌫⌦⏏⌤⌥

dinbats ❦
hyphen and dashes - ‐ ‑ ‒ – — ― …

Asian Punctuations:　、。！，：
Chinese phonetics ㄅㄆㄇㄈㄉㄊㄋㄌㄍㄎㄏㄐㄑㄒㄓㄔㄕㄖㄗㄘㄙㄚㄛㄜㄝㄞㄟㄠㄡㄢㄣㄤㄥㄦㄧㄨㄩ

林花謝了春紅 太匆匆, 無奈朝來寒雨 晚來風
胭脂淚 留人醉 幾時重, 自是人生長恨 水長東

(let ((x 913)) (while (/= x 999) (ucs-insert x) (setq x (+ x 1))))

http://xahlee.org/Periodic_dosage_dir/t1/20040505_unicode.html