Common use of For E Clause in Contracts

For E. ▇▇▇▇▇ ▇▇▇▇▇▇: 5.22.2.1 For 500,000 shares, exercisable immediately 5.22.2.2 For 1,500,000 shares exercisable no sooner than April 1, 2000 but not later than April 30, 2000