PDF Pro 2 can add various kinds of arrow heads to either the start or end of lines and polygonal shapes.

  1. Choose View > Toolbars > Drawing to view the drawing tools.
  2. Use the Line tool  or the Polygon tool  to draw.
  3. Click on the start/end arrows menus to change the arrows of the current selection.

    The start and end arrow menus display the currently chosen arrow type for the selected object(s).
  4. Tear off either menu to convert it into a floating toolbar.
Notes
  • Lines and their arrows always have the same colour.
  • The size of the arrow head is proportional to the line width.