module Pdfmerge:sig..end
Merge PDF files
val merge_pdfs : bool ->
       bool ->
       ?process_struct_trees:bool ->
       ?add_toplevel_document:bool ->
       string list -> Pdf.t list -> int list list -> Pdf.tMerge PDF files. merge_pdfs retain_numbering remove_duplicate_fonts
    ?process_struct_trees ?add_toplevel_document names pdfs ranges will merge
    the given PDFs. if retain_numbering is true, page labels are retained. If
    remove_duplicate_fonts is true, duplicate fonts are detected and
    coalesced. If process_struct_trees is true (default false), structure
    trees are trimmed and merged. If add_toplevel_document is also true
    (default false) a PDF/UA-2-style top level /Document structure tree entry
    is added. names is a list of strings the same length as the list of
    PDFs. Equal names imply equal PDFs (for efficiency).  ranges is a list
    of page ranges. A page range is a list of pages to select, in order. For
    example [1] or [2; 2; 2; 5; 6; 7].
val remove_duplicate_fonts : Pdf.t -> unitRemove duplicate fonts from a PDF. For example, if it was created by merging several documents from the same source.