Re: ConTeXt tool for enabling comments in PDF ?

[Vit Zyka <vit.zyka@seznam.cz>]

>> No. You wrote that this possibility is mentioned somewhere. Where?
> 
> in the pdf specs

Hmmm. I can find only (p. 92 1.6spec):
   "The absence of this entry (/Encrypt) from the trailer dictionary
    means that the document is not encrypted."

It seems to me now that rights without passwords relies with
/Perms in catalog (p.117, 699) and signatures (p.684).
Something like:

-----------------------------
\pdfcompresslevel=0

\immediate\pdfobj
   {<< /Type /Sig
       /Filter % something from Adobe.PPKLite Entrust.PPKEF CICI.SignIt 
VeriSign.PPKVS
       /Contents % signature
       /ByteRange %?? UR3 in /Perms
       /P -4
    >>}
\edef\DocMDPobj{\the\pdflastobj\space 0 R }
\immediate\pdfobj
   {<< /Type /Sig
       /Filter % something from Adobe.PPKLite Entrust.PPKEF CICI.SignIt 
VeriSign.PPKVS
       /Contents % signature
       /ByteRange %?? UR3 in /Perms
       /P -4
    >>}
\edef\URRRobj{\the\pdflastobj\space 0 R }
\pdfcatalog{/Perms << /DocMDP \DocMDPobj /UR3 \URRRobj >> }

Hallo
\end
------------------------------

Sorry for uncomplete code, but I have not studied the signatures yet.
And sorry for a bit out of ConTeXt topic. Hans, is it time to move to 
the pdftex list?

Vit Zyka