A year ago in the U.S. Championship Wes So was awarded a
default for writing encouraging notes to himself during a game.
Harmless but against the rules. He was warned twice then when
playing Akobian after 6 moves Akobian told the arbiter So was writing
to himself. "Concentrate", "Watch my time." kind of thing.
(he should have wrote - 'Do no write notes to myself.' )
The Arbiter defaulted Wes.
Time passed and one year later....
S. Wesley - V. Akobian US Chess Championships 2016
A look at the 22....Re8 variation.