> For the complete documentation index, see [llms.txt](https://learn.squirrel365.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.squirrel365.io/components-functions-and-connections/overview-1/input-output.md).

# 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="/pages/yaYo3CmAPfXChftPmF5N" %}
[Browser Info](/components-functions-and-connections/overview-1/input-output/browser-info.md)
{% endcontent-ref %}

{% content-ref url="/pages/EfNOuyMz8QGdND2Nea7m" %}
[Export to Excel](/components-functions-and-connections/overview-1/input-output/export-to-excel.md)
{% endcontent-ref %}

{% content-ref url="/pages/GsoSxscnDYk0cpY8fhqS" %}
[Export to PDF](/components-functions-and-connections/overview-1/input-output/export-to-pdf.md)
{% endcontent-ref %}

{% content-ref url="/pages/LgGD77b6nIC7G2fz92YD" %}
[External Parameters](/components-functions-and-connections/overview-1/input-output/external-parameters.md)
{% endcontent-ref %}

{% content-ref url="/pages/VPaeF1lMNUushQtmgfop" %}
[Tableau Parameters](/components-functions-and-connections/overview-1/input-output/tableau-parameters.md)
{% endcontent-ref %}