Keysight Technologies 3458A Guide D'utilisation page 379

How It Works
Simply create a new subprogram in the 3458AA's program memory space using
the multimeter's SUB command. You may include any multimeter commands as
discussed in chapter 6. You may also include any of the new BASIC language
commands described in this supplement to build simple BASIC programs. It's that
easy – and yes, these commands will work with all revisions of the 3458AA's
instrument firmware (except as noted).
Subprograms can be called from the GPIB bus, assigned to a front-panel
user-defined key (F0 through F9) for a single key press operation, or called from
within another subprogram.
The 3458AA's BASIC language does not support the following concepts.
– String variables and operations
– Line numbers
– GOTO statements
– GOSUB statements
– Local variables (all variables are global)
– Parameter passing
– Any other BASIC commands not listed in this supplement.
Keysight 3458A User's Guide
BASIC Language for the 3458A 7
379