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This page documents the parameters that the IG publisher defines for use in


Which kinds of log output messages to produce - the value is a code, from this list:

  • init: Messages describing the start up process (for debugging)
  • progress: Overall progress messages
  • tx: Messages describing the use of the terminology server (for debugging)
  • generate: Log when producing an individual resource  (troubleshooting only - leave off)
  • html: Log when validating an html page (troubleshooting only - leave off)

Default = none


Fine grained control over generation of resources:

  • example-narratives: generate narrative in examples if they don't have any (as opposed to conformance resources, which are always generated)
  • genExamples: produce extra examples (todo: document this)

Default = none

Except: you can't turn example-narratives off. Todo: decide why this exists. But you can suppress - see next item


A resource to suppress narrative generation for (and Resource.text will be removed if found). Format is (type)/(id) e.g. Patient/example, or type or id may be * e.g. Task/* - do not generate narrative for any Task resource.

Narrative Generation should never be suppressed for any canonical resource

Note for HL7 users: the FMG will review which resources have narrative suppressed and why when publication approval is sought


A resource not to validate. Format is (type)/(id) e.g. Patient/example, or type or id may be * e.g. Task/* - do not validate any Task resource.

Suppressing validation is generally a bad idea. There's two contexts where it might be useful: validation of really big resources that takes a long time, and examples that are purposefully wrong to demonstrate what not to do. But while it sounds good - don't bother me with problems I mean to introduce, it's too easy for other unintended problems to accumulate. So it's better to keep validation on.

Note for HL7 users: the FMG will review which resources have validation suppressed and why when publication approval is sought. FMG would generally prefer to see explicit errors for resources that are wrong intentionally, and will OK publication in this case. It's going to reviewed either way.

path-resourceyespathRelative path to a location in the IG repository from which to load resources.  Default = "\resources"
path-binaryyespathRelative path to a location in the IG repository in which to look for binary adjunct files (see below)

If true, scan the locations in which resources might be found (above) looking for resources, and auto-loading them. Else, only load what is in the IG.

Default = false

codesystem-propertyyesuriA code system property to show when rendering code systems (code system property definitions with a 'rendered-value' extension are always shown, as is any property in the uri space
path-pagesyespathA relative path in which pages can be found.  Default = "\pages"
path-qanopathThe relative path to the qa folder (generated fragments to check rendering in browser). If not specified, no qa is produced.  Default = "\qc"


The relative path to the terminology cache. (see (todo) for further details). 

default = no value - txCache not in version control (slower builds)




A relative path that contains liquid templates for generating narrative

path-tempnopathThe relative path to use for jekyll processing. Defaults to "\temp"
path-outputnopathThe relative path where the output is generated. Defaults to "\output", which must be the case for the ci-build scripts
path-historynourlThe url where the history file is found (usually "(canonical)/history.html"). Used when checking links
path-expansion-paramsnopathThe relative path to a parameters resource that contains expansion parameters used when the IG publisher expands a value set
path-suppressed-warningsyespathA file to load suppressed error messages from (one msg per line). Suppressed errors don't chose up in the qa.ini (but will be checked anyway if publishing through HL7 processes)

A mask that identifies specific HTML files exempt from having header / footer etc.

Discuss with FHIR Product Manager before using in any HL7 IG

extension-domainyesurlAn external domain fro which extensions are allowed to come (else they'll be flagged as invalid when validating). is always allowed

Whether to generate active tables in the generated fragments (tables that will expand and contract). Note that turning this on requires that this entry be found somewhere in the header of the generated html pages:  Default = false

 <script src="fhir-table-scripts.js"></script>
ig-expansion-parametersyescode? broken - needs reworking
special-urlyesurlIf a canonical resource in the IG should actually have a URL that isn't the one implied by the canonical URL for the IG itself, it must be listed here explicitly (as well as defined in the resource itself). It must be listed here to stop it accidentally being different. Each canonical url must be listed in full as present on the resource; it is not possible to specify a pattern.
template-openapinopathA relative path to the template openapi file to use when generating openapi files (e.g. populate openAPI security details)
template-htmlnopathA relative path to the template to use when rendering html pages
template-mdnopathA relative path to the template to use when rendering markdown pages
apply-contactnotrue|falseif true, overwrite all canonical resource contact details with that found in the IG.  Default = false
apply-contextnotrue|falseif true, overwrite all canonical resource context details with that found in the IG.  Default = false
apply-copyrightnotrue|falseif true, overwrite all canonical resource copyright details with that found in the IG.  Default = false
apply-jurisdictionnotrue|falseif true, overwrite all canonical resource jurisidiction details with that found in the IG.  Default = false
apply-licensenotrue|falseif true, overwrite all canonical resource license details with that found in the IG.  Default = false
apply-publishernotrue|falseif true, overwrite all canonical resource publisher details with that found in the IG.  Default = false
apply-versionnotrue|falseif true, overwrite all canonical resource version details with that found in the IG.  Default = false

Fine grained control over validation flags when validating resources / IGs:

  • check-must-support: Does nothing! (for now?)
  • allow-any-extensions: Allow any extensions at all (and therefore miss accidental broken extension references)
  • check-aggregation: check that aggregation is correct (in IGs, bundles are often broken up for publishing / documentation purposes)
  • no-broken-links: don't report broken links in HTML pages (note: never turn this off for HL7 guides. Stay on top of fixing broken links; it's a chore, but if you leave it till later, you won't have time, and your IG won't be approved for publishing)
  • show-reference-messages: when validating, instead of showing a summary of issues from validating the target of references, just show all the validation messages in detail

Default = none of these options

show-inherited-invariantsnotrue|falseIf true, render inherited constraints in the full details and invariants view. Default = true
usage-stats-opt-outnotrue|falseIf true, usage stats (information about extensions, value sets, and invariants being used) is not sent to (see e.g. Default = false

Request that the IG publisher generate packages for additional versions than the stated version e.g. the IG might be for authored against version 4.0, but also produce an R3 version.

For each occurence of this parameter, the IG publisher will produce an extra package, with the filename id.ver.tgz where id is the main id of the ig, and ver is the parameter value. (note that this is different to the main package which is always called package.tgz). 

This parameter can have one one of following values:

  • r2
  • r2b
  • r3
  • r4
  • r5

This parameter should be used with great care, and only after consulting the FHIR Product director to consider all of it's ramifications. It's generally only appropriate for terminology resources. 

It's not an error to generate the same version as the IG itself - this is typically done for consistency of use across versions


the release label - values:

  • ci-build - the continuous integration build release (not stable)
  • draft - draft version
  • qa-preview - frozen snapshot for non-ballot feedback
  • ballot - frozen snapshot for ballot
  • trial-use - official release with 'trial use' status
  • release - official release for use
  • update - official release with 'trial use' status - posted as an un-ballotedSTU update
  • normative+trial-use - official release with mixture of trial use and normative content




notrue|falsewhen true, these parameters will cause the publisher to exclude the generation of the respective formats - xml, json or ttl  - and to exclude the respective tabs from the implementation guide pages.

Control how the IG publisher does a comparison with a previously published version (see qa.html)

Possible values:

  • {last} - compare with the last published version (whatever it's status) - this is the default if the parameter doesn't appear
  • {current} - compare with the last full published version 
  • n/a - don't do any comparison 
  • [v] - a previous version where [v] is the version
bundle-references-resolvenotrue|falsewhether to require that references in bundles resolve. Default is true - references must resolve within implementation guides.

Managing Warnings and Hints

The implementation guide publisher generates many Warnings and information messages. They may arise from:

  • Errors in the design of the Implementation Guide
  • Bugs in the publication tooling
  • Necessary outcomes from the specification (not an issue at all)

Every one of these messages needs to be checked. When there are a large number of these, it can be difficult for someone reviewing the qa page to distinguish which warnings they need to pay attention to and which are new/important. Once the message has been checked and is known to be not an issue needing resolution, the message can be added to the suppressed warnings file. 

This file has the following format:

== Suppressed Messages ==

# Your Reason Here
error or warning message to be suppressed
error or warning message to be suppressed

Lines are grouped by # Reason which explains why the message is considered ok (not an error).  Each message line below it contains the message to be suppressed - copy and paste the message from the qa.txt file produced by the ig-publisher. (typically output/qa.txt). 


== Suppressed Messages ==

# The following code systems are external and not supported by terminology server
Code System URI '' is unknown so the code cannot be validated
# example for suppressing information messages
Code System URI "" is unknown so the code cannot be validated

This mechanism can suppress information messages, warning messages and errors related to broken links (e.g. if a link is created to a file produced during post-processing or that otherwise isn't resolvable during the IG publication process).

Binary Adjunct Files

For several resource types, it can be more convenient to edit base64Binary content directly. The obvious candidate resources are:

  • Binary
  • Library
  • DocumentReference 

But there are many other resources where this might be useful. The technique described here will work for any Resource with Attachments in it.

Here's how to make it work: 

  • Create the resource as per normal 
  • For the attachment resource, leave it empty, and provide only an id property
  • the id has the special value "ig-loader-[filename]", where filename is the name of the file to load. e.g. "id" : "ig-loader-MyLibrary.cql"  (case sensitive)
  • The IG Publisher will scan all the folders identified by the path-binary parameter (see above), and remove the id property, and replace with with the content from the file 
  • If a matching file cannot be found, the id will be left in place, and an error will be logged in the qa page

Binary is a special case. For Binary, make the content of the data itself equal to "ig-loader-[filename]"

Note: the following file extensions are supported:

  • .txt (text/plain)
  • .pdf (application/pdf)
  • .jpg, .png, .gif (image/xx)
  • .dicom - application/dicom
  • .cql - text/cql. Note that CQL included into a library is subject to additional processing. A second content will be injected for application/elm+xml - do not create a stub for this manually)

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1 Comment

  1. The format of the Suppress Messages file should NOT include curly brackets. The file should read

    == Suppressed Messages ==

    # Reason