508 Compliance

• http://www.hhs.gov/web/508/ (same as http://508.nih.gov)
• http://mynci.cancer.gov/admin/508
• Americans with Disabilities Act of 1990 (ADA) Section 508

• Alt Tags All images on web pages should have an alt tag.
  I did this using programs:
  • alt
  • imgalt.p
  • mkalttagsfunction
  • dependencies: tree number clmn
  These programs are available in my toolkit.
• Blinking letters I removed blinking text after identifying them by using the script
  

  tree 'grep -i blink *.html'

  2012 Feb 06: I used script ~/n/s/treefind to identify and fix remaining uses.
• PDF alternative text
  • Myths & FACTS about 508: "run an accessibility report generated using Adobe Acrobat Professional 8.0 Checker."
  • How to tag images in LaTeX?
    • google: latex pdf "alternative text"
    • Creating Accessible Adobe PDF Files - A guide for document authors Not useful - nothing about LaTeX.
    • Conversion from postscript to PDF is dvips. method for tagging images? (man divps)
    • Does Postscript provide an alternative tag? google: postscript alternative text
      • Alternate Text for Images code but unresolved issues:

        [/Subtype /Figure /Alt (Image of Figure 2-1) /StPNE pdfmark
        [/_objdef {layoutObj} /type /dict /OBJ pdfmark
        [{layoutObj} <> /PUT pdfmark
        [/Obj {layoutObj} /StAttr pdfmark
        [/StBMC pdfmark
               

      • google: pdfmark
      • google: Adobe Acrobat 7.0.5, pdfmark Reference Manual October 2, 2005 Adobe
      • google: Thomas Merz Web Publishing with Acrobat/pdf pdfmark Primer has a section on TeX!!! page 89.

        TEX.
        The powerful TEX typesetting system also has a mechanism for including user-defined printer instructions into the output stream. The \special instruction can be used to embed PostScript code. It is also suited for pdfmark programming. The following example defines PDF document information within a (device-driver-dependent) \special sequence:

        \special{ps::
        [ /Title (User Manual)
        /Author (Michael Heinzel)
        /Subject (Adjusting the electronics of MH-screen)
        /Keywords (screen display MH-screen)
        /DOCINFO pdfmark
        }%
        

        The macro package hyperref can automatically insert pdfmarks for hypertext links and for certain document information. You can find more information on creating PDF from a TEX source in Section 5.6.
        [5.6 TEX page 70 - not in the online sample]

• See the thread: [texhax] Teaching TeX to Visually Disabled
• http://vinuxproject.org/ "Vinux is a remastered version of the Ubuntu Linux Distribution optimised for visually impaired users."
• http://emacspeak.sourceforge.net/ "Emacspeak is a speech interface that allows visually impaired users to interact independently and efficiently with the computer."
• LaTeX accessibility

Schneider Lab
origin:    2010 Mar 30
updated: 2018 Sep 25