On the Articles main tab in Ted4 or in Fred4, with an article open, switch to source view or to split view. See Switch between views.
On the View menu, click Show GNML.
To display tags by default in each text
On the Edit menu, click Preferences, and then on the Source tab / Display sub-tab, click Show markup.
Notes
•To personalize the look and feel of tags in text, see the "Change the type size and color" paragraph in the Personalize article source pane topic, in particular the section "More about text, tags and special status colors".
•To learn how to deal with tags read the other topic in this chapter.