Beginnings of a PDF file reader.Use at your own risk.General usage:inspect (PDFReader new scan: (FileStream readOnlyFileNamed: 'Festplatte:Docs:pdf:PDFSPEC13.PDF'); xrefSectionAndTrailer)inspect the "Root" entry in that dictionary.execute "PDFPageMorph new page: (self pageAt: 1); openInWorld"to see the first page