that is a nasty flow chart but accurate
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it is a 3 mode light, and each mode has a secondary level underneath it, accessed by quick double-click.
so it really has 6 modes.
and one of those modes (high) has a programmable set of secondary levels
the secondary level underneath high mode is programmable.
click fast and release - high mode at the last level used
click and hold for just a moment - low mode at last level used
double-click in any mode, get the secondary level of that mode
press and hold button, it scrolls through low-medium-high
while in high mode, double-click fast will go between high and secondary level, and if you
do this repeatedly 6 times, it then starts to scroll through the high secondary optional levels
stop to set the high secondary level
click - off