I also don't see anything about optional apostrophe in ISO32000, however on page 374 there is example where is trailing apostrophe. Maybe it is just a mistake in specification, whereas in every PDF1.* (where not?) documents trailing ' is necessary.
I contacted the ISO/TC 171 SC2 asking for a clarification on this issue. -- Jose E. Marchesi <[email protected]> http://www.jemarch.net GNU Project http://www.gnu.org
