(PECL ps >= 1.1.0)
Adds link which launches file
bool ps_add_launchlink ( resource $psdoc, float $llx, float $lly, float $urx, float $ury, string $filename )
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