how to write a notice/formal letter of this case..please help me~ sorry my english is poor, hope u guyz understand what i'm trying to bring out.. My brother started a Car Accessories Business with a friend. Due to some private issues, my brother decided to resign from the company and quit/vacate(?)[sorry i dont know which phrase is suitable to use in this case] his shareholding(?)[is it correct?]. My brother's friend had found a new partner and will continue the business. The landlord of the company asked my brother to write a simple notice since the Tenancy Agreement had my brother's name as the tenant. But i'm not familiar with those law's terms, i don't know what's the title should i put for the notice, i don't know how to write it.. guyz, please teach me... thx~ really appreciate if anyone of u can help me out!^^