Sets certain information fields of the document. This fields will be shown as a comment in the header of the PostScript file. If the document is converted to pdf this fields will also be used for the document information.
BoundingBox is usually set to the value given to the
first page. This only works if ps_findfont() has not
been called before. In such cases the BoundingBox would be left unset
unless you set it explicitly with this function.
This function will have no effect anymore when the header of the postscript file has been already written. It must be called before the first page or the first call of ps_findfont().
Resource identifier of the postscript file as returned by ps_new().
The name of the information field to set. The values which can be
Orientation. Be aware that some of them has a
meaning to PostScript viewers.
The value of the information field. The field
Orientation can be set to either
BoundingBox is a string consisting of four numbers.
The first two numbers are the coordinates of the lower left corner of
the page. The last two numbers are the coordinates of the upper