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based on an earlier version of the Wolfram Language.
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CellAutoOverwrite

CellAutoOverwrite
is an option for Cell which specifies whether an output cell should be overwritten by new output when the preceding input cell is evaluated.
  • An output cell is deleted only when new output is ready to be inserted in its place.
  • With CellAutoOverwrite->False, new output is placed directly after the preceding input, pushing down pre-existing output.
Create an input cell with an output cell that has the setting CellAutoOverwrite->False:
When the input is evaluated, it creates a new output cell without overwriting the old one:
Create an input cell with an output cell that has the setting CellAutoOverwrite->False:
When the input is evaluated, it creates a new output cell without overwriting the old one:
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