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An R in this column means that Quicken has reconciled the transaction (after you reconcile your account, the transactions marked as cleared have an R in the Clr column). Reconcile means that you have verified that the transactions recorded in your Quicken register agree with the transactions recorded at your bank, or any other records you might have.
Notes
If you use online payment, you can check the status of a payment while it is being processed.
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