> For the complete documentation index, see [llms.txt](https://docs.archisketch.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.archisketch.com/guide/enterprise-en/parametric-library/advanced-settings/custom-field.md).
# Properties and Data
Attributes and data are a feature that allows you to add additional custom fields beyond the part information fields provided by default by Arkisketch.
For example, values that need to be used commonly in multiple places, such as a product's price or related links, are convenient to reuse if registered as parameters.
## Accessing Attributes and Data
You can access it by clicking Library Advanced Settings > Attributes and Data.
## Add Attribute
* You can enter the custom field creation modal by clicking the \[Create] button in the upper right.
* After entering the field information and clicking the \[Create] button, the custom field is created.
## Edit & Delete Attributes
You can edit or delete an attribute by clicking the icon button to the right of the attribute.
## Edit Attribute Values (Parts)
* You can check custom fields on the part details page.
* You can edit the value by clicking the \[Edit] button on the right side of the custom variable field.
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