Work groups and accelerators are now creating a significant volume of FHIR implementation guides. The templates and tooling are also increasingly being used by organizations, SDOs and other stakeholders outside HL7 international. These guides have largely migrated to using a common publishing template, however there are still significant variations in how implementation guides are organized and presented. As well, the common templates will need to continue to evolve to support new requirements and to improve implementation guide authoring, presentation, navigation, usability and accessibility for different audiences/consumers. This may involve configuration/variation for different types of guides. This project will not cover FHIR methodology, but may provide feedback to and liaise with MnM and/or FHIR-I around the structure and function of the resources used to define implementation guides. Management groups (and the TSC) will be final arbiters of what requirements will be mandated for HL7 publication. This project will coordinate the solicitation, review and endorsement of implementation guide authoring guidelines for FHIR implementation guides, including from 'external' stakeholders. It will also make recommendations to the FMG about guidelines to be enforced as part of balloting and publication processes. Finally it will vet and, as necessary, solicit community feedback on proposed changes to either the base template, HL7 template and IG Publisher that affect the IG authoring process and/or the IG reading or consumption process.