Attribute: xmlns

The xmlns attribute, when added to the sys:job-detail tag, lets the system know which vocabulary to use in evaluating the codes that you have entered, so that the proper content will be generated.

Should you be aware of the vocabulary you are using, you can enter the URL of some page that contains a definition of it.

Otherwise, you do not need to add the attribute to the tag at all, and the system will automatically use the default vocabulary.

In the end, if you do decide to use the attribute, enter the tag into the desired page's "Source" editor window so that it looks something like this:

<sys:job-detail xmlns="http://www.example.org/xhtml" />