ting the data storage elements in an SGML-compliant document and their content. [Computer and Information Sciences] 
permanent preservation system 
n.,
 Initialism for “public key cryptosystem.” [Computer and Information Sciences] 
n.,
n.,
 Initialism for “public key encryption.” [Computer and Information Sciences] 
n., See
n.,
 Initialism for “public key infrastructure.” [Computer and Information Sciences] 
n., See
n.,
 Text or other data that contains no formatting and/or is not encrypted. [Computer and I