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6 Iteration  6.1 The LOOP Facility 6.1.1 Overview of the Loop Facility 6.1.1.5 Summary of Loop Clauses
6.1.1.5.1 Summary of Variable Initialization and Stepping Clauses
The for and as constructs provide iteration control clauses
that establish a variable to be initialized.
for and as clauses can be combined with the loop
keyword and to get parallel initialization and stepping1.
Otherwise, the initialization and stepping1 are sequential.
The with construct is similar to a single let clause.
with clauses can be combined using the loop keyword and
to get parallel initialization.
For more information, see Section 6.1.2 Variable Initialization and Stepping Clauses.
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