Here are notes on changes made to Igor Pro in previous versions:
Reasons to upgrade Igor Pro from previous versions.
Igor Pro 7 New Features Relative to Igor 6.3..
Igor Pro 6.3 New Features Relative to Igor 6.2.
Changes to Igor Pro 6.3 since release.
Igor Pro 6.2 New Features Relative to Igor 6.1.
Changes to Igor Pro 6.2 since release.
Igor Pro 6.1 Detailed New Features Relative to Igor 6.
Changes to Igor Pro 6.1 since release.
Igor Pro 6.0 New Features Relative to Igor 5.
Changes to Igor Pro 6.0 since release.
Overview of Igor Pro 5 relative to 4.
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Igor Pro 8
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Igor XOP Toolkit
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Igor NIDAQ Tools MX
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