The Free On-line Dictionary of Computing (19 January 2023):

Transaction Application Language
TAL
Tandem 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)