On Sat, Oct 13, 2012 at 8:12 PM, Bill Meahan wrote:

Setting author, title, keywords metadata is rather simple.

Is there a corresponding way to set PDF security properties, e.g. allow/disallow comments, allow/disallow printing &c.

Have you seen qpdf ? http://qpdf.sourceforge.net/files/qpdf-manual.html

-- luigi

allow/disallow printing &c.

Set it free!!! :-P Technically speaking, I'd like to tell you that there is no easy way (without controlling the user's computer) to disallow printing. The viewer program has to VOLUNTARILY refuse itself to obey the user and opt to obey you. There is no easy way to accomplish that. But anyway... almost everything I have learned on the last few years, I owe it to people that are willing to set their knowledge free (as in freedom) on the internet. I have learned tools (CVS, SVN, mercurial), I have learned languages (C++, python, php), I have learned about LaTeX, I have learned about ConTeXt (thanks Hans et al). I have learned automake, autoconf. I have learned some GStremer. Etc, etc. And not only that... virtually, every tool I use today, I owe it to people who want to share. I owe it to Hans (et al) that we have ConTeXt. We have TeX, Lua, LuaTeX, Python, Django, Rails, Ruby, PHP, Postgres, MySQL, LibreOffice, GCC, Mercurial, Subversion, many compilers, Apache, KDE, Gnome, Kile, etc, etc... Where would you be now if it was not for those and for the freedom they gave you? Don't give just the crumbs to your readers! Think of all you have received until now... :-) Recommended reading: https://www.gnu.org/philosophy/right-to-read.html Cheers, André Caldas.