On 15 Oct 2011, at 20:00, Graham Cox wrote:

> 
> On 15/10/2011, at 11:55 PM, Gerriet M. Denkmann wrote:
> 
>> The pdf is created, looks ok, but has a white background.
> 
> 
> Are you sure?
No.

> How are you viewing it?
Preview.

> In Preview, you get a white background unless you check "Show Image 
> Background" in the View menu.

I used "Show Image Background" and now see a checker board (white + medium 
gray) behind my red character 'a'.

Does this mean the background is indeed transparent?

Other files (which I believe to have alpha) show a checkered background of 
light and dark gray.

And when I use File → Export... and choose png, I do not see a checkbox for 
alpha, and the png file seems to have a white background (does not react to 
"Show Image Background").


Kind regards,

Gerriet.

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