Purpose:

Review, add, edit, or delete line items of an invoice.

Explanation: 

An item is a product or service that Cheqbook user sells. This item can be used in an invoice to a customer. An invoice (sales invoice) is a document requesting payment for products and services. In this case, a sales invoice is applied to Customers of the Cheqbook user. An individual invoice can contain one or more line items.

Actions:

Add New Item: Click "New Item" to add a new line item. See documentation for New Item.

Modify Line Item: Click "Edit" to modify a line item. On the "Edit Item" page enter the following information:

• Name: Enter the name of the item.
• Income Account: Select an income account from the dropdown menu.
• Description (optional): Enter a description.
• Price (optional): Enter the price.
• Save Changes: Click "Update Item".
• Cancel Changes: Click "Cancel".

Delete a Line Item: Click "Delete" to delete a line item. You will be asked to "Confirm" or "Cancel" the deletion.

Additional Resources:

Wikipedia Invoice