Hi Vlad,

ASN.1 stands for Abstract Syntax Notation number One.
this is formal notation used for describing data transmitted by telecommunications protocols, regardless of language implementation and physical representation of these data, whatever the application, whether complex or very simple.

you can find some of the article in http://www.oss.com/asn1/

I am trying to develop application to manipulate hundreds of files using VFP but I don't know where to start when I find all the input files are in this ASN.1 format.

Thanks,
Andreas.