The colon in an xml tag signifies a namespace. “openSearch” would be the
and all tags in the document with that prefix are in that namespace.
If you look at the root element it declares the namespace:
Note that the URL there is just being used as a URI… a unique
identifier for the
namespace. Giving it the prefix allows you to use the prefix in the tags
instead of having
to stick that whole URI in every tag in the namespace.
I don’t know anything about feedtools, but hopefully it has some
facility for dealing with
namespaces… Any decent XML library should.