# Storage Format

#### File and File Name Format:

* All tournament summaries *MUST* be stored in plain text files.
* All tournament summary files *MUST* have an .OTS file extension.
* Filenames *MUST* use only ASCII characters.

{% hint style="info" %}
Other than the above requirements, hand history filenames can be named anything.  We recommend including at least the tournament name in the filename.
{% endhint %}

#### Tournament Summary Groupings per File

A tournament summary should be written to the tournament player's local computer as soon as the player busts from a tournament and there should be one [tournament summary JSON object](https://ts-specs.handhistory.org/less-than-standardized_tournament_summary-greater-than/less-than-standardized_tournament_summary-greater-than) per file.  All of the information for the tournament, that is relevant to the tournament player should be available at that time.

If multiple tournament summaries are requested by a user at a later date then multiple tournament summaries can be included in a single file.  When multiple tournament summaries are included in a single file, each [tournament summary JSON object](https://ts-specs.handhistory.org/less-than-standardized_tournament_summary-greater-than/less-than-standardized_tournament_summary-greater-than) *MUST* be separated by one blank line such as:

```
{"ots":<standardized_tournament_summary_object_1>}

{"ots":<standardized_tournament_summary_object_2>}

{"ots":<standardized_tournament_summary_object_3>}
```

{% hint style="warning" %}
If multiple tournament summaries are included in a single file, the resulting file will not be considered "valid" JSON.  However, for this standard, it is considered acceptable.
{% endhint %}