on the profit chart,
I think it would be nice if we could make notes on the chart,
example, if we didn't do so well in one period in the profit chart,
maybe the market was very volatile at that time or for whatever reason
our strategy didn't work.
we could then make a note what we think is the reason
or how the market was behaving at that time,
for example "volatile market"
and mark that area with a line or arrows.
this can give us clues to improve our strategy.
