
Namespaces
There are two EXProc namespaces:
http://exproc.org/ns/steps, the namespace name for EXProc steps.http://exproc.org/ns/contrib, the namespace name for user-contributed pipelines.
On this site, the prefix ex: is used conventionally for the EXProc step namespace,
and exc: is used for the user-contributed pipelines namespace.