The ARexx programming language can act as a central hub through which applications - even those created by different companies - can exchange data and command. For example, using ARexx you can instruct a telecommunications package to dial an electronic bulletin board, download financial data from the bulletin board, and then automatically pass the data to a spreadsheet program for statistical analysis - without any user intervention.
ARexx is an interpreted language that uses ASCII file input. The ARexx interpreter is t he RexxMast program, located in the System drawer of Workbench. RexxMast monitors the execution of an ARexx program. If RexxMast finds an error while translating or executing a line, it halts and displays an error message on the screen. This interactive testing is both a learning tool and an aid in debugging programs because it immediately highlights when and where an error has occurred.
