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<a name="Instruction-syntax"></a>
<h4 class="subsection">9.41.3 Instruction syntax</h4>
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<p>The assembler syntax closely follows the syntax outlined in
Enterprise Systems Architecture/390 Principles of Operation (SA22-7201)
and the z/Architecture Principles of Operation (SA22-7832).
</p>
<p>Each instruction has two major parts, the instruction mnemonic
and the instruction operands. The instruction format varies.
</p>
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