What you do is that you use the feature in Paragraph Designer which will let you add a graphic above the paragraph.
- Set your cursor in a warning text
- Go to Paragraph Designer
- Go to the tab "Advanced"
- Click in the dropdown box "Frame Above"
- Here you find some standard graphics. What you need is to create a new graphic consisting of the triangle and the word Caution. Put this graphic on the reference page and give it a name. Now you can use that graphic as a Frame Above in the paragraph designer.
Bjørn Smalbro - FrameMaker.dk