... by default, has 256 single-byte characters. Data in the buffer is available as a charsequence to the commands for stuff like regex matching etc. The output can be redirected to a file, and an output encoding can be specified.The commands can also store/retrive arbitrary data for later use in a map. Evaluation of expressions in commands is done using Apache Jexl, and custom functions can also be used. Sample java usage and sample command line usage examples are included.