# CLI Reference {#cli-reference}


```bash
moxygen [options] <doxygen XML directory>
```


## Options {#options}


| Flag | Description |
|------|-------------|
| `-o, --output <file>` | Output file, must contain `%s` when using groups or classes |
| `-g, --groups` | Output doxygen groups into separate files |
| `-c, --classes` | Output doxygen classes into separate files |
| `-p, --pages` | Output doxygen pages into separate files |
| `-n, --noindex` | Disable generation of the index |
| `-a, --anchors` | Add anchors to internal links |
| `-H, --html-anchors` | Add HTML anchors to internal links |
| `-l, --language <lang>` | Programming language (default: `cpp`) |
| `-F, --flavour <name>` | Markdown dialect for admonitions: `pandoc` or `github` (default: `pandoc`) |
| `-t, --templates <dir>` | Custom templates directory |
| `-s, --source-root <dir>` | Source root for file-level group resolution |
| `-f, --frontmatter` | Prepend YAML frontmatter to output files |
| `-L, --logfile [file]` | Output log messages to file |
| `-q, --quiet` | Quiet mode |

When `--groups` or `--classes` is enabled, Moxygen writes the split files and also writes `api.md` for root-level globals and the top-level index unless `--noindex` is set.