1. add this invariant to this element:

Invariants
Affect this element
cnl-0 Warning Name should be usable as an identifier for the module by machine processing applications such as code generation name.matches('[A-Z]([A-Za-z0-9_])

')

2. and change all existing parameters accordingly:

here

https://confluence.hl7.org/display/FHIR/Implementation+Guide+Parameters

and here

http://build.fhir.org/valueset-guide-parameter-code.html

Justification, When trying to create a hash of the parameters the codes with '-' are treated as expressions in several languages such as Python.

eg.

ig_params = dict(
logging = ['init','progess','tx','generate','html'], # default = none
generate = ['example-narratives','genExamples'], # default = none
path-resources = [], # your paths here, default = resources
)
SyntaxError: keyword can't be an expression