Lloyd McKenzie presented on tooling for authoring FHIR implementation guides. He discussed the HL7 IG Publisher, which generates websites from ImplementationGuide resources and other artifacts. Trifolia was also covered, a web-based tool for developing and publishing FHIR profiles and implementation guides. Other tools mentioned for authoring pieces of implementation guides included Forge, ClinFHIR, and Simplifier. The goal was to provide an overview of existing options for creating FHIR implementation guide content and documentation.