The text tool allows designers to describe interface content areas and interface elements. Styling of text, such as choosing the colour or font is not important at this point and could be done with the help of an external CSS file that could get applied in “prototype view” mode.
Designers however describe content in various ways as seen here. Sometimes they will use exact text as intended, and at other times more generic content descriptions are used in the form of labels. At even other times symbolic data representations are used to denote text formatting.
Controlling text size could be used to denote text priority but also to have the text fit into smaller elements.
