Bonjour,
I find this interesting matrix program;
http://www.stefanv.com/calculators/hp35s_matrix_multitool.html
at line M286 there is the instruction;
x swap (I), I can't reproduce the exact instruction,
please look at line m286
How I can enter this instruction.
Thanks
Denis
Edited: 25 Dec 2012, 10:37 a.m. after one or more responses were posted