Rich Piazza

@chadillac, An extension has been implemented to support TLP2 - see: https://github.com/oasis-open/cti-stix-common-objects/tree/main/extension-definition-specifications/tlp-2.0 If this is satisfactory for you needs, please close this issue.

On page 213 of the spec, there is an example extension definition that has multiple extension types. I'm not sure that python-stix2 supports this - a question for @chisholm and/or...

I think having only one extension type per extension definition should be a best practice. I think the idea behind having multiple types in one extension definition was to indicate...

There is a concept of "subtypes" in the specification. They were the "original" extensions - see the File SCO Have you seen the extension policy document? Right now it is...

@chisholm - Yes - I was using the term "subtype" informally. Predefined extensions were a OO shortcut - I don't think the intent was every anything else. The new extension...

Can we merge this even though the CLA isn't signed?

Send email to Chet Ensign

@clenk - @vEpiphyte is volunteering to update antlr4! Can you follow thru with him?

@ejratl - something to consider: https://github.com/oasis-tcs/cti-stix2/issues/293. If you read to the bottom there is some hesitation to do this before 2.2

This seems to work: git sparse-checkout set asciidoc-shared extension-definition-specifications objects/extension-definition objects/identity objects/location objects/marking-definition Can you give it a try - it eliminates 99% of the files in the repo :-)