Here is a summary of the provided text in one paragraph: A "line item" refers to a group of similar things with information about each of them, such as expenses on an invoice or items purchased through an eCommerce platform. In Zapier, line items are used to make it easier to process and use data from various sources. When working with line items, actions can be set up to act as a "for each" loop, processing the list of items individually. Line items can be used in various ways, such as creating invoices, making complex processes easier, or automating tasks like sending emails. However, not all actions support line items, and when they don't, data may need to be processed manually or using specialized utilities like Formatter by Zapier. The utility allows users to create new line items from text or split existing values into separate line items, making it easier to work with data in other apps.