This property determines whether incremental update should be used.

Incremental update leaves the structure of any original document intact and appends any changes to the end of the file.

Because the original PDF is unchanged, it is possible to revert back to the state before the changes were applied. Because only updated objects are written to disk it can result in faster write times.

However, most importantly, you have to use incremental update if you wish to preserve any signed signature fields present in the document. Indeed, after any signature field is signed, you need to commit changes to file using incremental update.

Incremental Update is incompatible with Linearization and Remapping. As such it will override these settings.

None.