[dev-context] comment for attachments in PDF/A-3

[Wolfgang Schuster]

Pablo Rodriguez schrieb am 24.03.19 um 18:12:
> On 3/21/19 6:35 PM, Hans Hagen wrote:
>> On 3/20/2019 10:46 PM, Pablo Rodriguez wrote:
>>> [...]
>>> In some scenarios, this could be a security issue.
>>>
>>> Wouldn’t it be possible that the content of the /Names entries would be
>>> replaced by the option keys title or name from \attachment?
>> could be an option (not that i see a security risk here but flagging
>> something as a 'security issue' seems to be popular anyway

Use

     \attachment[file=<filename>]

instead of

     \attachment[<filename>]

The name of the first argument can be used to refer to a previously 
defined attachment
(can be done with \registerattachment) but ConTeXt supports a file for 
backwards compatibility.

Wolfgang