TIP (TON Improve Proposals) is a proposal of key concepts of technological solutions to improve the work of Free TON.
For example, TIP-2 describes the distributed certificate store standards. This system is necessary in cases where a certified store of keys and values is indispensable to provide a service.
TIP-3 describes the token interfaces standard. Standard interfaces are designed for creating interchangeable or non-interchangeable tokens in Free TON smart contracts, as well as for use in monetary systems.