In the Viewer window the Text generator can be edited by clicking on the Controls tab and changing the parameters (such as the text, font, colour, position, etc.)

By clicking back to the Video tab in the Viewer window the Text generator can be dragged into the Timeline.

The text can be placed over existing video in the Timeline which will superimpose it over that video, or if it is placed in the Timeline where there is no video it will appear with a black background.

Note: Text, as with Transitions, must be rendered to be viewed. Placing the Playhead over a non-rendered section will give a single frame rendered into the Canvas window.