Reword the introduction

Author: NataliaIvakina

modules/ROOT/pages/backup-restore/online-backup.adoc

@@ -465,12 +465,14 @@ bin/neo4j-admin database backup --to-path=azb://myStorageAccount/myContainer/myD
 [[diff-backup-as-parent]]
 === Perform a differential backup using the `--prefer-diff-as-parent` option
 
-When taking a differential backup with the `--type=DIFF` option, the parent, by default, is the *most recent non-empty* backup in the directory.
-In some cases, you may prefer to use the *latest differential* backup as the parent, even if there is a more recent full backup.
-You can do this by setting the option `--prefer-diff-as-parent` to `True`.
+By default, a differential backup (`--type=DIFF`) uses the *most recent non-empty* backup -- whether full or differential -- in the directory as its parent. 
 
-This can be used to ensure you have differential backups for all transactions, which would allow you to restore to any point in time.
-Otherwise, the transactions between a full backup and the previous differential backup will not be backed up as individual transactions.
+The `--prefer-diff-as-parent` option changes this behavior and allows you to use the *latest differential* backup as its parent, even if a newer full backup exists. 
+
+This apprroach allows you to maintain a chain of differential backups for all transactions and restore to any point in time.
+Without this option, the transactions between the last full backup and a previous differential backup cannot be backed up as individual transactions.
+
+To use the `--prefer-diff-as-parent` option, set it to `true`.
 
 The following examples cover different scenarios for using the `--prefer-diff-as-parent` option.