I love how a tongue-in-cheek reply about the lack of syntax highlighting for ZIL files drew the attention of someone who actually implemented syntax highlighting for it.
> The source code was contributed anonymously and represents a snapshot of the Infocom development system at time of shutdown - there is no remaining way to compare it against any official version as of this writing, and so it should be considered canonical, but not necessarily the exact source code arrangement for production.
(From the "witness" readme, and presumably other repos)
As a zipfile because someone is bound to get that repo taken down.
https://drive.google.com/file/d/1S1CgtZNEKS8VITqTAWAkeyO0LBf...