Use the Text Tool 
The Text tool is used to add sections of text to a User Layer.
To add text:
- Click at the point on the User Layer where you want the text to be placed. A Text Box opens.
- Enter the desired text.
- The Text Box extends from the point where you clicked to the edge of the tab.
- Although the text wraps as it is entered in the box, the wrap-around does NOT carry over into the text object. Therefore, use carriage returns to start a second line.
- The box opens with a height equal to three lines. If you enter more lines, the text scrolls up inside the box.
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When done, click outside the text box. The Text Box becomes a text object on the User Layer.
The text itself, and the text object can be edited, as detailed below.