Keep track when processing files
| Function | Description |
|---|---|
| state_attach_puts() | Write a string to the state |
| state_mark_attach() | Write a unique marker around content |
| state_mark_protected_header() | Write a unique marker around protected headers |
| state_prefix_put() | Write a prefixed fixed-string to the State |
| state_prefix_putc() | Write a prefixed character to the state |
| state_printf() | Write a formatted string to the State |
| state_putwc() | Write a wide character to the state |
| state_putws() | Write a wide string to the state |
