On the left side of each work order in the list you may see any of the following informational and status icons:
icon means that work order can be approved, but has not been approved yet.
icon means that work order has been approved and can be billed (invoice can be created from work order).
icon means that work order has been billed (an invoice has been created from work order, and work order order has been added to the invoice).
icon means that notes have been added to work order.
icon means that work order is monitored
icon means that a call can be made to the customer (there is a phone number in the customer’s profile).
icon means that work order is shared with the team (is shown on the Team Work Orders screen).