Click the plot to select it.

From the Plot menu, select Title and then Add Title. Alternatively, right-click (Control-click, for Macintosh) the curve to activate the context-sensitive menu and follow the same path.

Edit the title.  To enter 2-D math in the title, click the Math button and enter an expression using 2-D format.  To return to text mode, click the Text button.

Click the plot to select it.

From the Plot menu, select Title and then Edit Title.  Alternatively, double-click the title.  The title region will display.

Edit the title.

Click the plot to select it.

From the Plot menu, select Title and then Remove Title.  Alternatively, right-click (Control-click, for Macintosh) the curve to activate the context-sensitive menu and follow the same path.

Follow the same steps as with a title.  The caption appears below the plot.