> Lynn batten wrote:
> could someone please fill me in on the meaning of 'extensibility' in
> terms of YAML's design criteria.
YAML is "extensible" in the sense that it allows for application-defined
types; the set of types is infinitely extensible.
A great many "features" are possible by making use of such types. For
example, the '<=' key for merging keys from other maps, a '!include <url>'
"processing instruction" and so on.
As for extending YAML itself, that is possible by using #YAML:X.Y and
additional directives. However that's not something we look forward to
doing; we'd rather use the types mechanism instead.