[NTG-context] Attach (embed) a file info a .pdf

Hello, I'm not able to recall the way how to attach a file into a .pdf being generated. I need the attached files to be "openable" or "savable" from the .pdf - see the image. How to achieve this with ConTeXt? Best regards, Lukas -- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 241 096 751 Fax: +420 244 461 038