Graphics with *.pdf extension

Hello,

I have a problem with displaying images in *.pdf format in Arbortext Editor.

The files with standard extensions (*.jpg, *.eps, etc) are displayed in Arbortext Editor, but when I try to insert an image in the *.pdf format, all I can see is an icon indicating a missing image.

Does anybody know if this is a matter of changing the display options or maybe this format is not supproted?

Thank you very much in advance.

Sandra