Rexx Programming/Introduction/feature

The rexx scripting language provides: simple syntax that is easy to read small instruction set containing just two dozen instructions freeform syntax typeless variables character string orientation dynamic data handling no reserved keywords (except in local context) arbitrary numerical precision decimal arithmetic trailing zeros resulting from nonzero arithmetic operations are preserved a selection of builtin functions automatic storage management simple error handling builtin trace and debugging tools crash protection content addressable data structures associative containers straightforward access to system commands and facilities few artificial limitations simplified input and output facilities filename association unconventional operators no nudge operators no compound assignment operators no generic way to include functions and subroutines from external files no integral support for octal notation no integral support for regular expressions