(PHP3 >= 3.0.12, PHP4 >= 4.0b2)
void pdf_add_annotation (int pdf document, double llx, double lly, double urx, double ury, string title, string content)
void pdf_add_annotation
The pdf_add_annotation() adds a note with the lower left corner at (llx, lly) and the upper right corner at (urx, ury).