Extractor
The format-specific component that reads metadata out of a document.
manni meta has one extractor per input format: Markdown, MDX, AsciiDoc,
reStructuredText, XML, and HTML. The extractor is the only part of manni meta
that knows about a file’s format. Once it produces
metadata, validation and reporting
work the same for every format. You can force a specific extractor with --as,
which is required when reading from stdin. See
Supported formats.