# PRFilePrivate

Layer-dependent implementation data.

## Syntax

```{code}
#include <prio.h>

typedef struct PRFilePrivate PRFilePrivate;
```

## Description

A layer implementer should collect all the private data of the layer in
the {ref}`PRFilePrivate` structure. Each layer has its own definition of
{ref}`PRFilePrivate`, which is hidden from other layers as well as from the
users of the layer.