Binary format Trajectory format (binary) TNG Trajectory Next Generation (TNG) is a format for storage of molecular simulation data. It is designed and implemented by the GROMACS development group, and it is called to be the substitute of the XTC format. Fully architecture-independent format, regarding both endianness and the ability to mix single/double precision trajectories and I/O libraries. Self-sufficient, it should not require any other files for reading, and all the data should be contained in a single file for easy transport. Temporal compression of data, improving the compression rate of the previous XTC format. Possibility to store meta-data with information about the simulation. Direct access to a particular frame. Efficient parallel I/O. Trajectory Next Generation format 1.22