Lexical Conventions
From GNUpdf
A PDF document is a sequence of 8-bit bytes.
- Character set:
- Regular characters
- Delimiter characters
- White-space characters
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White-space characters
| character | ASCII code |
|---|---|
| Null | 0 |
| Tab | 9 |
| LineFeed | 10 |
| FormFeed | 12 |
| Carriage return | 13 |
| Space | 32 |
| End of line |
One of:
|
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Delimiter characters
These characters delimit syntactic entities. Not part of of the defined entity.
| Delimiter | Meaning |
|---|---|
| ( | begin of string |
| ) | end of string |
| < | begin of hexadecimal string |
| > | end of hexadecimal string |
| [ | begin of array |
| ] | end of array |
| { | begin of ??? |
| } | end of ??? |
| / | begin of a name |
| % | begin of a comment |
[edit]
Regular characters
