Description
int pdf_add_outline (int pdf document, string text [, int parent [, int open]])
The PDF_add_outline() function adds a bookmark
with text text that points to the current page.
The bookmark is inserted as a child of parent and
is by default open if open is not 0. The
return value is an identifier for the bookmark which can be used
as a parent for other bookmarks. Therefore you can build up hierarchies
of bookmarks.
Unfortunately pdflib does not make a copy of the string, which forces
PHP to allocate the memory. Currently this piece of memory is not
been freed by any PDF function but it will be taken care of by the
PHP memory manager.
