Source : Free On-Line Dictionary of Computing

Transaction Application Language
     
         (TAL) Not "Tandem Application Language". A
        {block-structured}, {procedural} language optimised for use on
        {Tandem} {hardware}.  TAL is a cross between {C} and {Pascal}
        and is the primary system programming language on {Tandem}
        computers.  Tandem has no {assembler} and originally had no C
        or Pascal.
     
        [Was TAL derived from HP's System Programming Language?]
     
        (2001-07-09)