# Input/Output

The Input/Output category contains functions responsible for the input and output of data to and from Squirrel. These include collecting information such as a user's browser and OS, external parameters for communication between parent and child, or for outputting results in Squirrel in PDF or Excel formats.

### Functions

{% content-ref url="input-output/browser-info" %}
[browser-info](https://learn.squirrel365.io/components-functions-and-connections/overview-1/input-output/browser-info)
{% endcontent-ref %}

{% content-ref url="input-output/export-to-excel" %}
[export-to-excel](https://learn.squirrel365.io/components-functions-and-connections/overview-1/input-output/export-to-excel)
{% endcontent-ref %}

{% content-ref url="input-output/export-to-pdf" %}
[export-to-pdf](https://learn.squirrel365.io/components-functions-and-connections/overview-1/input-output/export-to-pdf)
{% endcontent-ref %}

{% content-ref url="input-output/external-parameters" %}
[external-parameters](https://learn.squirrel365.io/components-functions-and-connections/overview-1/input-output/external-parameters)
{% endcontent-ref %}

{% content-ref url="input-output/tableau-parameters" %}
[tableau-parameters](https://learn.squirrel365.io/components-functions-and-connections/overview-1/input-output/tableau-parameters)
{% endcontent-ref %}