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## 6. Limitations

## 6.1 Disk I/O

The existing library for the Supervision doesn't implement C file I/O. There are even no hacks for the `read()` and `write()` routines.

To be more concrete, this limitation means that you cannot use any of the following functions (and a few others):

- fclose
- fopen
- fread
- fprintf
- fputc
- fscanf
- fwrite
- ...

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