ls deal with the data formatting, including the syntax of messages, the terminal to computer dialogue, character sets, sequencing of messages, etc. [Computer and Information Sciences] 
n., Either the minutes of the proceedings at an international conference or an addendum to a treaty. [Government] 
n., A summary of a document or treaty. [Government] 
n., A treaty amending and supplementing another treaty. [Government] 
n., A set of conventions governing the treatment and especially the formatting of data in