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== PDF Software ==== PDF Document Viewers == === PDF Document Viewers ====== PDF Authoring ===== PDF Authoring == == PDF Utilities == === Linux PDF Tools: tiff2ps and ps2pdf === graphics: netpbm make pdf: from tiff, Use Tiff to PS (in linux) tiff2ps *.tiff > tiffs.ps from PS to PDF ps2pdf tiffs.ps=== PDF Utilities ===