I am reading your whitepaper,

On page 9, under the topic "Tokenomics"

100 million token supply
- ICO: 20M (20%)
- Dead: 40M (40%)
- Team: 2M (2%); locked but released quarterly for 1 year
- Marketing: 10M (10%); 33% locked for 2 years
- Liquidity: 20M (20%); locked but released monthly to our launchpad
pool and to be distributed to other pools
- Community Jackpot Fund: 8M (8%); locked but released quarterly

What is the word "Dead" mean here?