- On the ribbon, click Isos tab
Iso Annotations panel
Iso Message.
- In the Create Iso Message dialog box, Enclose Message In drop-down list, click the message enclosure.
- Enter the desired message text in the Message box.
- To create a locating dimension for the message, select the Draw Dimension to Message check box.
- Click OK.
- In the drawing area, specify an insertion point on the center line of pipe or a fitting.
A marker is added inside the pipe. You can see it if you switch to wireframe view.