OS/2 Procedures Language 2/REXX


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Keyword Instructions


A keyword instruction is one or more clauses, the first of which starts 
with a keyword that identifies the instruction.  If the instruction has 
more than one clause, the clauses are separated by a delimiter, in this 
case a semicolon (;). 
Some keyword instructions, such as those starting with the keyword DO, can 
include nested instructions. 
In the syntax diagrams, symbols (words) in upper case letters denote 
keywords; other words (such as expression) denote a collection of symbols. 
Keywords are not case dependent: the symbols if, If, and iF would all 
invoke the instruction IF. Also, you usually omit most of the clause 
delimiters (;) shown because they are implied by the end of a line.   

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