# Stedi Guides now supports ISA and GS segments

> You can now view and customize ISA and GS segments of the X12 envelope within the guide builder interface.

Published Oct 28, 2022

Product: EDI platform

You can now view and customize [ISA](https://www.stedi.com/edi/x12/segment/ISA) (Interchange Control Header) and [GS](https://www.stedi.com/edi/x12-008010/segment/GS) (Functional Group Header) segments of the X12 envelope within a Stedi guide using the [guide builder](https://portal.stedi.com/app/guides) interface. These customizations are reflected in the interactive documentation of a Stedi guide, and are not used for validation by the EDI Translate API.