Right now there is no place to store check number other than manually in the Notes field. Most of the time the check number is in the transaction name (e.g. Check 345 091300229835). This is a three-part request:
1) A separate field for check number so I can easily filter to just see checks in order - easy comparison to bank statements
2) The check number field could potentially be limited to Checking account types.
3) Automatically parse the transaction name for Check-space-number-space and fill in the check number.