App Startup:

Add an Expense add

Compulsory fields: Description, Amount

Optional Fields: Date (will be defaulted to current date), Tags

Tags are optional. Date is optional, will be default to today's date.

Add a remark to an expense remark

Delete an expense delete

Edit an expense edit

Editable fields (All optional): Description, Amount, Tag, Date

Note: Edit command cannot Remark. It should be edited via the Remark Command

Full command → all fields except expense index are optional.