Change Requests

According to the Terms of Reference every participant of IEHG is entitled to transmit proposals for amendments of the standard together with an explanation via the IEHG discussion forum. The following form has to be used to submit a change request:

Change request form (updated in December 2021)
Guideline for the drafting of change requests (updated in October 2023)

There is also a guideline for the development of new symbols for S-401 and an example for an annex to a change request that contains new symbols:

Description of the SVG profile scheme for symbols, that has to be taken into account for new symbols
Example of a proposal for a new symbol. Please replace the elements in the second column of the form with your text and pictures.

A list of all change requests and the next available change request number can be found at https://docs.google.com/spreadsheets/d/1darzMTlkqN4nDWOetW_6vCuqbGukEvN_9XYohwB_QLE/edit#gid=839558529?

If you aren't a registered user you will find instructions how to get access to the discussion forum in the following document:

How to get access to the discussion forum

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