Source : Webster's Revised Unabridged Dictionary (1913)

Lo \Lo\, interj. [OE. lo, low; perh. akin to E. look, v.]
   Look; see; behold; observe. ``Lo, here is Christ.'' --Matt.
   xxiv. 23. ``Lo, we turn to the Gentiles.'' --Acts xiii. 46.

Source : Free On-Line Dictionary of Computing

LO
     
        Linear Objects.  A {concurrent} {logic programming} language
        based on {linear logic}, an extension of {Horn logic} with a
        new kind of {OR-concurrency}.
     
        ["LO and Behold! Concurrent Structured Processes", J. Andreoli
        et al, SIGPLAN Notices 25(10):44-56 (OOPSLA/ECOOP '90) (Oct
        1990)].

L&O
     
        Logic and Objects.  A front end for {IC Prolog}.
     
       
     {(ftp://src.doc.ic.ac.uk/computing/programming/languages/pd-ICP-0,90.tar.Z)}.
        E-mail: Zacharias Bobolakis .
     
        ["Logic and Objects", Frank McCabe, Prentice-Hall].