Re: Hiding the content (drawing empty boxes?)

[Mojca Miklavec <mojca.miklavec.lists@gmail.com>]

Adam Lindsay wrote:
> Hans Hagen said this at Fri, 8 Jul 2005 09:12:01 +0200:
> 
> 
>>as long as it's only mojca's password that needs to be hidden

If I'm ever going to store my password in PDF files, I'll wait for 
pdfTeX support for password-protected files first :)

> :)
> Well, someone could cut-and-paste that invisible text...

The problem is not in cutting-and-pasting at all. If I make a 
presentation, people won't mind cutting and pasting on my computer while 
I talk. But as long as it is only supported by Adobe >= 6, it's only 
suboptimal. :(
If someone could hack the plain TeX macro, it would probably do exactly 
what I would expect it to do, but it doesn't sound easy at all.

> But that certainly works better on Apple's Preview.app, and probably is
> mostly appropriate for the intended use... (hiding stuff in
> presentations, making them non-Acrobat/JS dependent)
> 
> Except that it doesn't seem to hide framed content.

Tu sum it up:
- the adapted plain TeX trick with boxes doesn't place any content, but 
only works for plain text (not useful)
- \startproperty[mysecret] hides the content (works satisfactory in that 
view), but only works on Adebe Acrobat, not even in the Wiki
- \startproperty[hidden] works on more browsers, but has the same effect 
as making fonts transparent: it doesn't influence any rules, figures, 
... only fonts.


For those complaining that hiding doesn't work on other PDF viewers: 
Adobe also gives up (one of those nice "undocummented features", one 
could also call them bugs) if I try to save the resulting file as TXT. I 
just wanted to check if the hidden content will be saved, but I didn't 
manage to save anything anyway.

Thanks for all the comments,
	Mojca