Places a hyperlink at the given position pointing to a file program which is being started when clicked on. The hyperlink's source position is a rectangle with its lower left corner at (llx, lly) and its upper right corner at (urx, ury). The rectangle has by default a thin blue border.
The hyperlink will not be visible if the document is printed or viewed but it will show up if the document is converted to pdf by either Acrobat Distiller™ or Ghostview.
psdocResource identifier of the postscript file as returned by ps_new().
llxThe x-coordinate of the lower left corner.
llyThe y-coordinate of the lower left corner.
urxThe x-coordinate of the upper right corner.
uryThe y-coordinate of the upper right corner.
filenameThe path of the program to be started, when the link is clicked on.