Check what you see in the Acrobat window against the border properties in the Properties Editor (or Viewer)
For a selected border, the Properties Editor (or Viewer) shows:
- The selected border icon (in the left pane)
- Number of borders selected
- Object and border swatches
- Trap direction (the potential for a trap appears as
The trap direction is blank until you set the trap direction using the PDF Trap Editor. ) - Neutral density
- Color separations for adjacent object (CMYK percentages, spot colors)