also see the arrow test with ISO Encoding
← ←
↑ ↑
→ →
↓ ↓
↔ ↔
↕ ↕
▲ ▲
► ► (will not render correctly in IE6)
▼ ▼
◄ ◄ (will not render correctly in IE6)
▶ ▶
&x25C0; &x25C0;