Transactions
The Transactions subsection provides information about the EIP-1559 as it applies to how gas estimations and costs of transactions work on Polygon PoS. Further on, are discussions on new and old types of transaction formats and how they are processed in Polygon PoS.
Regarding account abstraction, the subsection contains a simplified overview of the different components of ERC-4337 and how these components work together. These are altogether; UserOperation, Bundler, EntryPoint, and Contract Account. Optional ERC-4337 components are Paymasters and Aggregators.
There is a extra subsection discussion several aspects of the so-called Meta-transactions. These are transactions that allow anyone to interact with the blockchain without requiring users to have tokens in order to pay for the network’s services.