# US Content Rating Default Metadata File
The `content_rating_us` Metadata File is used to dynamically create collections based on the content ratings available in your library.
If you do not use the US-based rating system within Plex, this file will attempt to match the international ratings (such as "gb/12A") to the respective US rating system (such as "PG-13")
Example Collections Created:
![](../images/moviecontent_rating_us.png)
The below YAML in your config.yml will create the collections:
```yaml
libraries:
Movies:
metadata_path:
- pmm: content_rating_us
```
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## Template Variables
Template Variables can be used to manipulate the file from the default settings which are provided.
Note that the `templates_variables:` section only needs to be used if you do NOT want to use the default settings.
All [Shared Variables](../variables) are available as well as the additional Variables below which can be used to customize the file.
| Variable | Description & Values |
|:-----------------|:----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `sort_by` | **Description:** Controls the sort method for the collections
**Values:** Any sort method in the [Sorts Options Table](#sort-options) |
| `include` | **Description:** Overrides the default include list
**Values:** Any Content Rating found in your library |
| `exclude` | **Description:** Overrides the default exclude list
**Values:** Any Content Rating found in your library |
| `addons` | **Description:** Defines how multiple keys can be combined under a parent key. The parent key doesn't have to already exist in Plex
**Values:** Any Content Rating found in your library |
| `append_include` | **Description:** Appends to the existing include list
**Values:** Any Content Rating found in your library |
| `append_exclude` | **Description:** Appends to the existing exclude list
**Values:** Any Content Rating found in your library |
| `append_addons` | **Description:** Appends to the existing addons list
**Values:** Any Content Rating found in your library |
The below is an example config.yml extract with some template_variables changed from their defaults.
```yaml
libraries:
Movies:
metadata_path:
- pmm: content_rating_us
template_variables:
addons:
R:
- "de/18"
sort_by: title.asc
collection_section: 25
collection_mode: show_items
use_other: false
use_separator: false
sep_style: blue
```