# io

Fortran module: `io`

## Parameters

User-configurable parameters (can be set via `param_dict`):

| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| `columnoutput` | `<class 'numpy.ndarray'>` | `0` |  |
| `fluxoutput` | `<class 'numpy.ndarray'>` | `0` |  |
| `fulloutput` | `<class 'numpy.ndarray'>` | `0` |  |
| `heatingoutput` | `<class 'numpy.ndarray'>` | `0` |  |
| `nout` | `<class 'numpy.ndarray'>` | `0` |  |
| `rateconstantsoutput` | `<class 'numpy.ndarray'>` | `0` |  |
| `readabunds` | `<class 'numpy.ndarray'>` | `0` |  |
| `writeabunds` | `<class 'numpy.ndarray'>` | `0` |  |

## Constants (Read-Only)

Fortran PARAMETER constants (compile-time values):

| Constant | Type | Value |
|----------|------|-------|
| `abundloadid` | `<class 'numpy.ndarray'>` | `71` |
| `abundsaveid` | `<class 'numpy.ndarray'>` | `72` |
| `columnid` | `<class 'numpy.ndarray'>` | `11` |
| `debugid` | `<class 'numpy.ndarray'>` | `79` |
| `heatingid` | `<class 'numpy.ndarray'>` | `14` |
| `inputid` | `<class 'numpy.ndarray'>` | `21` |
| `outid` | `<class 'numpy.ndarray'>` | `74` |
| `outputid` | `<class 'numpy.ndarray'>` | `10` |
| `rateconstantid` | `<class 'numpy.ndarray'>` | `12` |
| `ratesid` | `<class 'numpy.ndarray'>` | `13` |

## Runtime Access

Access `io` parameters at runtime using `uclchem.advanced.GeneralSettings()`.
See [Accessing Fortran Parameters](index.html#accessing-fortran-parameters-at-runtime) on the main Fortran API page for examples.