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When the history save/restore option is turned on, a new section is added to the save file before the
End-of-ACIS-data marker. This new section comes immediately after the information pertaining to the entities of the active model.
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Begin-of-ACIS-History-Data
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The new history section starts with a marker
Begin-of-ACIS-History-Data. Everything between this section marker and the
End-of-ACIS-History-Section marker obeys the rules of history save.
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This section of the save file lists entities which may no longer exist at the active state. However, these entities did exist at some point during the creation of the current model and are necessary for roll back and roll forward operations. Entities that were part of pruned branches are not saved.
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When the history save/restore option is turned on, the
End-of-ACIS-History-Sectionmarker immediately follows the history data. Between this marker and the Begin-of-ACIS-data marker are more entity records. These adhere to the entity record structure.
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End-of-ACIS-History-Section
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The
End-of-ACIS-History-Section marker is followed by the
End-of-ACIS-data marker.
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