I worked with a sparks from South Africa who used 'Alive' in place of 'Live' but then 'A, B, C' for 3ph.
Fairly recently I changed an in-line RCD along this sort of style
which had a window showing a red/black mechanical flag beside a neon.
Operation was 'Reset' turned from black to red and lit the neon (if it was powered).
'Trip' only tripped it if it was powered. IE the extension lead could be plugged in and out until the cows come home without ever touching a button.
I'm pretty sure we used to have some of this sort of thing
which followed the same format.
Fairly recently I changed an in-line RCD along this sort of style
Operation was 'Reset' turned from black to red and lit the neon (if it was powered).
'Trip' only tripped it if it was powered. IE the extension lead could be plugged in and out until the cows come home without ever touching a button.
I'm pretty sure we used to have some of this sort of thing