> For the complete documentation index, see [llms.txt](https://swatplus.gitbook.io/io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swatplus.gitbook.io/io-docs/introduction-1/simulation-settings/print.prt/interval.md).

# interval

Print interval within the period

This parameter specifies the interval within the specified printing period. 

{% hint style="info" %}
Example: If *interval* = 2, output will be printed for every other day.
{% endhint %}