• Classic Rexx compatibility
- roo! is an object-oriented enhancement of r4, which is
Kilowatt Software's Classic Rexx language offering.
- All Rexx capabilities that are supported by r4 are supported by roo!.
- roo! supports all Classic Rexx instructions and built-in functions, as well as the invocation of Classic Rexx internal and external procedures as subroutines and functions.
- roo! can execute Classic Rexx programs, without source modifications.
- roo! language extensions use syntax expressions that are improper within Classic Rexx.