REXX-VARIABLE

SIMPLE VARIABLE,COMPOUND,STEM VARIABLE

ALL VARIABLES CAN INDICATE BY '.' CHARACTER

SIMPLE VARIABLE: STRING WITHOUT  '.'

STEM VARIABLE: IT CONTAIN ONE AND ONLY ON '.' AT THE END OF THE STRING

COMPOUND VARIABLES: OTHERS

EXAMPLE

SV: A,ABC,A1,B3....

STEM VARABLE: LINE.,PROC.,.....

COMPOUND VARIABLE: A.B.C,B.C,....

VARIABLE ASSIGNMENT  FORMAT:

VARIABLE   =  VALUE

YOU CAN USE VARIABLE WITHOUT DEFINITION,JUST USE IT ,IT CAN TRANSPARENTS USE IT  IN NEED.

THE KEYWORD DROP CAN REVOKE A ASSIGNMENT ,THE VARIABLE VALUE IS ITS LITERAL STRING IT UPPER CASE

/* REXX */
FIRSTR='ABC'
A.B.C='HELLO WORLD'
A.='CHANGE THE WORLD'
SAY FIRSTR;
SYA A.
SAY A.B.C
SAY A.B
DROP FIRSTR;
SAY FIRSTR;
RETURN 0

THE OUTPUT IS :

ABC

CHANGE THE WORLD

HELLO WORLD

CHANGE WORLD

FIRSTR