4.2 All players that sign this undertaking agree not to compete in any cycle, tournament or match outside of FIDE, with the purpose of establishing a World Chess Champion, for a period of 4 (four) years from this date.
4.4 Players may be required to wear clothes or apparel with special branding from sponsors when specifically approved by the FIDE President.
So they lock you in for 4 years, that's "(four)" in case you can't read numbers, and be at the mercy of Kirsan's taste in couture! None of those Kalmykian outfits, I'm sure the players would hope.
Seriously, 4.4 looks pretty normal, but to be locked in for 4 years?