| Value | Meaning |
|---|---|
| L0 | Left-to-Right |
| LRE1 | Left-to-Right Embedding |
| LRO2 | Left-to-Right Override |
| R3 | Right-to-Left |
| AL4 | Right-to-Left Arabic |
| RLE5 | Right-to-Left Embedding |
| RLO6 | Right-to-Left Override |
| PDF7 | Pop Directional Format |
| EN8 | European Number |
| ES9 | European Number Separator |
| ET10 | European Number Terminator |
| AN11 | Arabic Number |
| CS12 | Common Number Separator |
| NSM13 | Nonspacing Mark |
| BN14 | Boundary Neutral |
| B15 | Paragraph Separator |
| S16 | Segment Separator |
| WS17 | Whitespace |
| ON18 | Other Neutrals |
The #PangoBidiType type represents the bidirectional character type of a Unicode character as specified by the <ulink url="http://www.unicode.org/reports/tr9/">Unicode bidirectional algorithm</ulink>.