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<a accesskey="1" href="page.php?w=ISPF&amp;p=3">1.Previous</a><br />
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<p><a href="page.php?w=z%2FOS">z/OS</a> that use the ISPF interface. ISPF can be run from a <a href="page.php?w=z%2FOS">z/OS</a> batch job.</p>

<p><big>History</big></p>
<p>An early version was called <b>Structured Programming Facility</b> (<b>SPF</b>) and introduced in <a href="page.php?w=OS%2FVS2_%28SVS%29">SVS</a> and <a href="page.php?w=MVS">MVS</a> systems in 1974. IBM chose the name because SPF was introduced about the same time as <a href="page.php?w=structured_programming">structured programming</a> concepts. In 1979 IBM introduced a new version</p><p>
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